Amy Brown Science | Biology and Chemistry Teaching Resources for Middle and High School
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Real Science Teaching. Real Classroom Experience.

I’m Amy Brown, a veteran high school biology and chemistry teacher, wife, and mom who understands the daily reality of lesson planning, grading, meetings, and everything in between. I know what it feels like to have too much to do and not enough time to do it.

After decades in the classroom, I’ve created rigorous, classroom-tested biology and chemistry resources that save you planning time while still delivering strong, meaningful science instruction. Every lab, activity, and lesson is designed to move students beyond memorization and into real scientific thinking.

If you want your students excited about science and thinking deeply without spending your entire weekend planning, you’re in the right place.

Amy Brown Biology and Chemistry Teacher

“I just love getting kids hooked on science.”

7 Reasons Microscope Skills Are Important in Biology Class

Microscope skills are one of the most important science skills we teach in biology. While students may forget specific vocabulary terms over time, the ability to observe carefully, think critically, and use scientific tools properly will stay with them far beyond your classroom. Learning how to use a microscope is not just about seeing something small. It is about learning how to investigate, question, and understand the world in a more detailed way.

If you are teaching middle school or high school biology, microscope work is an essential part of building strong science habits. Students are not just learning content. They are learning how to think like scientists. Here are seven reasons why microscope skills are so important.

1. Microscope work increases student engagement

Students are naturally curious, and microscopes tap into that curiosity. When students look through a microscope for the first time, they are seeing something they have never seen before. That sense of discovery creates excitement and interest in the lesson. Even students who are not usually engaged tend to become more focused when they are working with real specimens and real equipment.

2. Microscopes reveal a hidden world

Microscopes allow students to observe a world that is normally invisible to them. Cells, microorganisms, and tiny structures suddenly become real and observable. This helps students understand that biology is not just something found in a textbook. It exists all around them. This awareness builds curiosity and helps students develop a deeper appreciation for living systems.

3. Microscope skills reinforce measurement and observation

Using a microscope requires students to estimate size, compare structures, and understand magnification. They begin to see how changing objectives affects the field of view and the level of detail. These experiences strengthen both math and science skills. Students are practicing observation in a way that is much more meaningful than simply reading about it.

4. Microscope activities develop critical thinking

Microscope work encourages students to ask questions and make connections. Students must interpret what they are seeing rather than simply recording it. They think about structure and function, patterns, and relationships between organisms. This kind of thinking is essential in science and helps students move beyond memorization to real understanding.

5. Microscopes make abstract concepts easier to understand

Many biology concepts are difficult because students cannot see them directly. Microscopes help bridge that gap. Students can observe cells, tissues, and structures that would otherwise remain abstract ideas. This is especially important when teaching topics like cell structure. If you are teaching cells, take a look at these tips for teaching cells to help students connect what they see to what they are learning.

6. Microscope labs help students understand cause and effect

Microscope activities give students opportunities to see how changes affect what they observe. Whether they are adjusting focus, preparing a slide, or comparing specimens, students begin to understand how their actions influence results. This helps them think more carefully about procedures and outcomes, which is a key part of scientific investigation.

7. Microscope use builds confidence and lab skills

Using a microscope correctly requires practice. Students must learn how to carry it, focus it, and handle slides properly. These skills may seem simple, but they are essential for success in the lab. As students become more comfortable using the microscope, they also become more confident in their ability to complete lab activities independently.

How to help students build strong microscope skills

Once students understand why microscope skills are important, the next step is giving them meaningful opportunities to practice. A combination of review, collaboration, and hands-on lab work helps students move from basic understanding to true mastery.

A simple way to review microscope concepts is with this Microscope Color by Number activity. Students answer questions and reveal a picture as they color, making it a great option for review, reinforcement, or even sub plans.


For a more interactive approach, these Microscope Chat Lab Stations allow students to work together while rotating through activities that reinforce key microscope concepts.


If you want students to truly master microscope use, this Microscope Lab provides the hands-on experience they need to become confident and proficient.

Looking for more ideas? Check out my blog post "Microscope Activities that are Fun" for additional activities that keep students engaged.

Frequently Asked Questions About Microscope Skills

What are microscope skills?
Microscope skills include the ability to properly use and care for a microscope, prepare slides, focus correctly, and make accurate observations. These skills also involve understanding magnification, field of view, and how to interpret what is being observed.

Why are microscope skills important in biology?
Microscope skills are important because they allow students to observe cells and microscopic structures that cannot be seen with the naked eye. They also help students develop observation, measurement, and critical thinking skills that are essential in science.

What do students learn from using a microscope?
Students learn how to properly handle lab equipment, prepare slides, and make detailed observations. They also learn important concepts such as magnification, resolution, and how structure relates to function in living organisms.

What is the best way to teach microscope skills?
The best way to teach microscope skills is through a combination of direct instruction, guided practice, and hands-on activities. Students benefit from repeated opportunities to use the microscope in meaningful lab activities and collaborative tasks.

How can students practice microscope skills?
Students can practice microscope skills through structured lab activities, review assignments, and interactive tasks such as lab stations. Providing a variety of experiences helps students build confidence and improve their proficiency over time.

The bottom line is that microscope skills are worth the time you spend teaching them. They help students become better observers, stronger thinkers, and more confident scientists.

👉 For more ideas like these, visit my blog postThe Ultimate Guide to Teaching Science Process Skills. It includes graphing, laboratory skills, scientific method, vocabulary, measurement, and many other classroom topics.

Quotes from Albert Einstein

Look at this face.....
What's not to love?

I am totally in love with Albert Einstein!  My classroom walls are full of posters with his pictures and quotes.


I find some of his quotes to be simply amazing, and they inspire me everyday as I try to help my students make sense out of the scientific world.   I thought I would share a few of my favorites:

"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe." 
 Albert Einstein

"Insanity is doing the same thing, over and over again, but expecting different results." 
 Albert Einstein

"If you want your children to be intelligent, read them fairy tales. If you want them to be more intelligent, read them more fairy tales." 
 Albert Einstein

"The difference between genius and stupidity is; genius has its limits." 
 Albert Einstein

"When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity." 
 Albert Einstein

"I speak to everyone in the same way, whether he is the garbage man or the president of the university." 
 Albert Einstein

"Life is like riding a bicycle. To keep your balance, you must keep moving." 
 Albert Einstein

"Once you can accept the universe as matter expanding into nothing that is something, wearing stripes with plaid comes easy." 
 Albert Einstein

"Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid." 
 Albert Einstein

"What is right is not always popular and what is popular is not always right." 
 Albert Einstein

Science Skills: Significant Digits


Every year, the same great debate arises in our science departmental meetings .....  should we or should we not teach the rules of determining significant digits?  The members of the department have their reasons for being "pro" or "con" and it seems to me that the same people have the same reasons year after year.  Are we teaching significant digits because it is an important science skill, or just because it is found in the first chapter of the chemistry text book?

I tend to fall in the "pro" camp.  I think teaching significant digits is an important science skill to teach because:
  • It teaches the student the importance of making accurate and precise measurements.
  • It teaches the student how to look at the data in a scientific article and determine how accurate others have been in their measurements.
  • It teaches students how to learn a set of rules and then apply these rules to many examples.
  • It teaches critical thinking and problem solving skills.
  • It reinforces basic math skills when completing problems that involve calculations and rounding to a given number of significant digits.
  • It allows the opportunity to do a quick review on metric units.  (MANY kids need this!)
The people who think we should leave this out have pretty lame reasons (excuses) for their point of view:
  • It's boring.
  • Nobody needs to know this stuff any more.
  • It's archaic.
  • After you teach it in the first chapter, you never use it again.

The bottom line is that this is a tool of science, and for that reason, we need to makes sure our science students have this tool in their arsenal.  All research scientists know that there is "error" in their work.  The use of significant digits allows others a way of recognizing how much error exists in a set of measurements. 


Meanwhile, here are a few of the materials that I have developed and use as I teach significant digits.....I think it is still important!




Looking for additional science process skills activities? Be sure to visit my blog postThe Ultimate Guide to Teaching Science Process Skills, for more classroom ideas, teaching strategies, and ready-to-use resources.

Science Lab Equipment Activities for Middle & High School

Teaching students the names of laboratory equipment may seem like one of the simplest things we do at the beginning of a science course. Show them a beaker. Show them a graduated cylinder. Point out the test tube rack. Move on.

But knowing the name of a piece of lab equipment is not the same thing as knowing how to use it.

Before students begin working independently in the laboratory, they need to recognize the equipment they will encounter, understand its primary function, choose the correct tool for a particular job, and eventually use that equipment safely and accurately.

Those skills are worth teaching deliberately.

Over the years, I developed a simple progression for teaching science lab equipment that worked well in my high school science classes. I started by introducing the actual equipment, gave students opportunities to identify it and think about its function, and then moved them into activities where they had to decide which piece of equipment was appropriate for a particular laboratory task.

Only after that did we begin using the equipment to make measurements, collect data, create graphs, and carry out laboratory investigations.

If you are looking for practical ways to teach science lab equipment, my Lab Equipment Identification and Functions Reference Guide and Quiz gives students a structured way to learn the names and functions of common laboratory equipment before they begin using it in the lab.

Why Teach Science Lab Equipment Before the First Big Lab?

It is easy for us as science teachers to forget how unfamiliar a laboratory can be to students. We are so used to being in the lab that everything seems perfectly normal to us.

We know the difference between a beaker and a graduated cylinder. We know why we would reach for forceps instead of a medicine dropper, when to use test tube tongs, and what belongs on a ring stand. We have handled this equipment so many times that those decisions are automatic. Our students are not there yet.

Even students who have taken previous science classes may arrive with very different levels of laboratory experience. Some can immediately identify common lab equipment. Others may recognize an item but have no idea what it is called. Still others know the name but don't understand what the equipment is actually designed to do.

I don't want students learning those things in the middle of an experiment while everyone is trying to collect data.

A little time spent teaching laboratory equipment at the beginning of the year pays off throughout the rest of the course. Students become more comfortable in the lab, can locate what they need more quickly, and are better prepared to make good decisions during laboratory investigations.

Amy's Classroom Tip: Don't assume that because students have taken science before, they already know how to use basic laboratory equipment. I taught high school students, and I still reviewed the equipment we would use throughout the year. It gave everyone the same starting point before we began more complicated laboratory work.

Start With the Actual Laboratory Equipment

In my chemistry classes, one of my first steps was surprisingly simple.

I rolled a cart filled with laboratory equipment into the classroom.

The cart contained the pieces I wanted students to recognize and use throughout the course: beakers, graduated cylinders, Erlenmeyer flasks, test tubes, safety goggles, clamps, forceps, a mortar and pestle, and many of the other tools we would encounter during our labs.

Students had a reference sheet containing pictures of the equipment. I held up each item, we talked about its name and primary function, and students recorded that information on their handouts.

This wasn't intended to be a long lecture about laboratory equipment. The actual equipment was the lesson.

I allowed the students to pass the items around the room. Students could see the difference between items that can look surprisingly similar in a drawing. They could see the relative sizes of the equipment. I could point out important features and explain why we might choose one item instead of another.

Most importantly, the names on the page became connected to real objects they would soon be using in the laboratory.

Create a Lab Equipment Reference Guide Students Can Keep

I recently turned this classroom routine into my Lab Equipment Identification and Functions Reference Guide and Quiz.

The student identification guide includes pictures of 49 common pieces of laboratory equipment. As each item is introduced, students record its name and primary function. When the guide is complete, students can keep it in their science notebook or binder and refer to it whenever they work in the laboratory.

The resource also includes a 50-question lab equipment quiz that assesses both equipment identification and functions. Students first identify equipment from pictures and then answer questions requiring them to identify equipment from its function.

Printable files are included, along with digital options using Google Slides and a self-grading Google Form.

Amy's Classroom Tip: Whenever possible, show students the real equipment rather than teaching identification entirely from pictures. A photograph or drawing is useful as a reference, but nothing replaces holding up the actual item and talking about how it will be used in your lab.

Move Beyond Memorizing Lab Equipment Names

Once students can recognize the equipment, the next step is much more important:

Can they determine which piece of equipment they need? There is a big difference between answering: "What is this?" and answering: "Which piece of equipment should I use to measure 37 mL of water accurately?"

The second question requires students to understand function rather than simply memorize a vocabulary word. Students need opportunities to connect a piece of equipment with a real laboratory task. That is where I like to get students out of their seats and into the lab.

Try a Science Lab Equipment Scavenger Hunt

One activity I sometimes used with my students was a laboratory equipment scavenger hunt.

I spread the pieces of equipment I wanted students to review around the laboratory tables. Instead of giving students a list of equipment names to find, I gave them clues based on the functions and uses of the equipment.

For example, students might be asked to:

  • Find a piece of equipment used to measure mass.
  • Find the laboratory glassware best suited for accurately measuring a specific volume of liquid.
  • Find a piece of equipment used to measure and transfer small amounts of liquid.
  • Find the equipment used to support glassware above a Bunsen burner.
  • Find the protective equipment used to protect the eyes from splashes and broken glass.

Now students weren't simply matching a word to an object. They had to look at the available equipment, think about what each item was designed to do, compare possibilities, and make a decision.

I've now created a classroom-ready version of that activity. My Science Lab Equipment Scavenger Hunt contains 70 clues covering 49 pieces of common laboratory equipment.

The clues make students think about equipment in several different ways. They include:

  • Function clues that ask students to identify equipment from its primary use.
  • Laboratory application clues that place students in realistic situations and ask them to choose the appropriate tool.
  • Comparison clues that require students to distinguish between equipment with similar uses or appearances.
  • Physical examination clues that encourage students to look carefully at the actual equipment.

Some pieces of equipment appear in more than one clue, which is intentional. Students may need to think about the same tool in different ways rather than solving the entire activity by process of elimination.

You Don't Need to Set Up 49 Lab Stations

One thing I especially like about this activity is that there are no formal stations to construct.

Number the pieces of equipment, place them randomly throughout the laboratory, and let students move around the room using the clues to locate each item. Students record both the number attached to the equipment and the equipment name on their handouts.

I prefer having students work in pairs because the clues give them something meaningful to discuss. One student may immediately recognize the answer, while another may notice a physical detail or remember how the equipment was used in a previous lab.

Amy's Classroom Tip: Don't have every group start with Question 1. Assign different starting questions around the room. When students reach the final question, they can return to Question 1 and continue. Staggering the starting points prevents the entire class from gathering around the same piece of equipment.

And if you don't have time for all 70 clues, you don't have to use them all. The activity is editable, so teachers can select the number of questions that works with their class period and their students.

Then Let Students Actually Use the Equipment

Identification and function are only the beginning. Eventually students need to pick up the graduated cylinder, read the meniscus correctly, use the balance, measure with a metric ruler, read a Celsius thermometer, and safely operate the equipment required for their experiments.

This is where students move from knowing about laboratory equipment to actually developing laboratory skills.

One of the first laboratory activities I used with my students was my FREE Science Lab Equipment Skills Lab with Graphing and Data Analysis.

This activity focuses on the proper use of five basic pieces of science lab equipment:

  • Celsius thermometer
  • Graduated cylinder
  • Triple- or quadruple-beam balance
  • Metric ruler or meter stick
  • Bunsen burner

Students don't simply identify the equipment. They actually use it.

The activity also brings in another group of skills students will need throughout the year: organizing, graphing, and analyzing data. Students work with data tables and construct line graphs, bar graphs, and circle graphs.

Teach Measurement Along With Laboratory Equipment

Teaching science lab equipment also gives us the perfect opportunity to review scientific measurement.

I found that many students needed at least a short refresher on the metric system and on how to make careful measurements. Teenagers have a tendency to rush through an experiment, record the first number they see, and move on to the next step.

Learning to collect good data requires students to slow down. Students need practice reading scales carefully, recording measurements with appropriate units, recognizing the limits of the equipment they are using, and deciding whether a measurement seems reasonable.

Whenever time allowed, I also liked having students repeat measurements or complete multiple trials. Repeated trials reinforce an important idea: the first piece of data collected is not automatically perfect simply because it has been written in a data table.

Amy's Classroom Tip: When a student gets a measurement that is obviously unreasonable, resist the temptation to immediately tell them what went wrong. Ask, "Does that answer make sense?" Learning to evaluate their own data is an important laboratory skill, too.

What Science Lab Equipment Should Students Know?

The exact laboratory equipment students need to learn will depend on the course you teach and the investigations you conduct. A biology classroom will not use every piece of equipment with the same frequency as a chemistry classroom.

However, middle and high school students benefit from becoming familiar with several broad categories of laboratory equipment.

Equipment for Measuring

Common measurement tools include graduated cylinders, balances, thermometers, metric rulers, meter sticks, stopwatches, and pipets. Students should not only recognize these tools but understand what each one measures and when one tool provides a more appropriate measurement than another.

Laboratory Glassware and Containers

Students commonly encounter beakers, Erlenmeyer flasks, test tubes, watch glasses, evaporating dishes, crucibles, spot plates, and Petri dishes. These items may all hold materials, but they are designed for very different purposes.

Equipment for Transferring and Handling Materials

Forceps, medicine droppers, pipets, Beral pipets, scoopulas, spatulas, funnels, stirring rods, weighing paper, and weighing dishes help students safely transfer or manipulate laboratory materials.

Heating and Support Equipment

Students may also need to recognize Bunsen burners, hot plates, ring stands, iron rings, wire gauze, clay triangles, clamps, crucible tongs, test tube tongs, and heat-resistant ceramic squares.

Observation and Biology Equipment

Microscopes, microscope slides, coverslips, hand lenses, probes, forceps, scalpels, and Petri dishes are especially common in biology laboratories.

The goal isn't to have students memorize a giant list simply for the sake of memorizing it. The goal is laboratory independence.

When students can recognize a tool, explain what it does, select it when appropriate, and use it correctly, laboratory work becomes much smoother for everyone.

If your students are beginning microscope work, you may also want to read my post on teaching students to use the compound microscope.

Keep Reviewing Lab Equipment Throughout the Year

Introduce the equipment students will need most often first. Then revisit specific pieces before a laboratory activity that requires them.

For additional hands-on practice, my Science Skills Chat contains 17 collaborative science skills stations. Many of those stations require students to work directly with laboratory equipment.

Students practice laboratory equipment identification as well as using the graduated cylinder, metric ruler, laboratory balance, Celsius thermometer, and Bunsen burner. Other stations have students determine volume and density, separate a mixture, create scientific drawings, graph and analyze data, and practice other foundational science skills.

The stations are independent, so teachers can choose only the four or five that support the skills their students need at that point in the year. Additional stations can come back out later for review and reinforcement.

You can read more about the complete activity in my post 17 Essential Science Skills All Students Should Master.

Amy's Classroom Tip: Try a "Science Skills Friday." Once a week or periodically throughout the year, pull out one or two short skills activities. Students get repeated practice, and you don't have to devote several consecutive class periods at the beginning of school to every science process skill they will eventually need.

Make Lab Equipment Review Fun

Once students have received instruction and handled the actual equipment, review doesn't always have to look like another traditional worksheet or quiz. Changing the format gives students another opportunity to retrieve the same information while keeping practice from becoming repetitive.

Lab Equipment Color by Number

My Lab Equipment Color by Number Activity has students answer 55 questions covering the names and functions of 42 pieces of laboratory equipment. Some questions give students the function and ask them to choose the correct equipment, while others show an equipment picture that students must identify.

Digital Hidden Picture Lab Equipment Review

The Science Lab Equipment Digital Hidden Picture Activities provide paperless practice in Google Sheets. The set contains three games with 25 questions each. Correct answers turn green and reveal part of a hidden picture, while incorrect responses remain red so students receive immediate feedback.

Lab Equipment Acrostic Puzzle

My Lab Equipment Acrostic Puzzle reviews 46 pieces of laboratory equipment. As students solve the clues, selected letters from their answers reveal two science riddles. The jokes are corny, but fun!

These types of activities work well after initial instruction, before a laboratory practical, for homework, on review days, with a substitute teacher, or whenever students need another encounter with lab equipment vocabulary and functions.

Frequently Asked Questions About Teaching Lab Equipment

Should students memorize the names of lab equipment?

Students do need to know the names of the equipment they regularly use, but memorizing names should not be the final goal. Students should also understand the primary function of each tool, know when to select it, and eventually be able to use it correctly.

What lab equipment should I teach first?

Start with the equipment students will use most often and the tools they need for their first few laboratory investigations. Common starting points include safety goggles, beakers, graduated cylinders, balances, thermometers, metric rulers, test tubes, droppers or pipets, and basic heating or support equipment used in your course.

How can I make lab equipment identification more engaging?

Use the actual equipment whenever possible. Let students handle or closely examine it, complete a scavenger hunt, respond to function-based clues, use collaborative lab stations, and rotate through different forms of review rather than relying entirely on equipment-labeling worksheets.

When should I teach lab equipment?

I like to introduce the most commonly used equipment near the beginning of the course, before students begin significant laboratory work. Additional equipment can then be introduced throughout the year just before students need it. This approach gives students repeated exposure instead of asking them to memorize every item at once.

Lab Equipment Is Only the Beginning

Laboratory equipment is just one part of preparing students to work successfully in science.

Measurement, graphing, data analysis, laboratory safety, scientific reasoning, experimental design, and other science process skills all work together. Students are much more confident during laboratory investigations when we explicitly teach these foundational skills instead of assuming they already know them.

For a much broader look at building those skills, visit The Ultimate Guide to Teaching Science Process Skills.

And if you are getting your own laboratory ready for the school year, take a look at Returning to Your Science Lab After Summer for ideas on organizing equipment, checking supplies, and preparing your lab before students arrive.

Taking the time to teach laboratory equipment at the beginning of the year is not time taken away from your curriculum. It is preparation for everything that comes next.

When students know where to find the equipment, what it is called, what it does, which tool to choose, and how to use it correctly, they are much better prepared to walk into the laboratory and get to work.

Science Skills: The Metric System



Why do we continue to have to re-teach the metric system to our students every year?  I wish I knew the answer to this question!!  Students are exposed to and taught the metric system beginning in elementary grades, but they still need a refresher on it when they reach my high school chemistry class.  Why is this?  The reason is because a science class is the ONLY place that our students use the metric system.  While they may see references to it here and there, they never really use the metric system in their everyday lives.  Our students understand how many miles it is to the movie theater, but if you asked them how many kilometers to the movie theater, they will stare at you with a blank look.

In 1975, President Gerald Ford signed into law "H.R. 8674: Metric Conversion Act."  This law declared the metric system "the preferred system of weights and measures for United States trade and commerce." This law is ineffectual since it "permits the use of customary units in all activities."  Further, "all conversion was to be completely voluntary."  In other words, we have never converted to the metric system.  Our students haven't mastered the metric system because they do not use it except in our science classes.
Sure, the students know the basics of the metric system.  They know that length is measured in meters, mass is measured in grams and volume is measured in liters, but many of my students are still unsure as to how to convert one unit to another.  It is not unusual at all for one of my students to ask, "Which way do I move the decimal to convert ____ to ____?  Even more confusing is what to do with the units when determining area or volume.  How often have I heard, "Are these units squared or cubed?"

The manipulation of metric units must be reinforced at regular intervals, if for no other reason, than to just reinforce basic math skills.  Here's an example. Multiple the following:  (5 g/ml) (10 mL).  The answer?  50 g.  Many students will struggle when units are being added, subtracted, multiplied or divided. They can multiply 5 x 10, but they do not know what to do with the units.

What are we science teachers to do about this?  We have no choice but to teach, teach, teach! Your science class will go much smoother all year long if you will take a class period (or several!) at the beginning of the year to do a refresher on basic metric skills.

Here are a few resources in my TpT store that might be of some help to you:

Metric System Jeopardy Review Game

Metric System Bundle of 12 products

Metric System PowerPoint

Science Skills Mega Bundle

Metric System Task Cards

FREE Metric System BOOM Cards

Looking for additional science process skills activities? Be sure to visit my blog postThe Ultimate Guide to Teaching Science Process Skills, for more classroom ideas, teaching strategies, and ready-to-use resources.

Science Skills: Scientific Notation


In this series of blog posts, I have been writing about the importance of teaching "science skills" to our students.  (Previous posts include: Teach the Skills, Graphing Skills are Life Skills, and Applying the Scientific Method.)

The next skill that I would like to discuss is the proper use of scientific notation.  Scientific notation is used to express very small and very large numbers in a manner that makes problem solving easier.  Let's face it, chemistry students cannot enter Avogadro's number in their calculator unless it is in scientific notation.  In biology, viruses and bacteria are measured in nanometers and micrometers.  Both are simple examples of the need to use scientific notation in our science classes.

Many of the students entering my high school biology and chemistry classes are still struggling with how to write numbers in scientific notation.  Why is this?  I don't have the answer.  I worry that we are pushing middle school students to complete Algebra 1 and Geometry too early, and they are not getting the instruction they need in basic mathematics and arithmetic.

Whatever the reason, I find that I must spend a class period each year re-teaching this important skill.  Since my science classes use very large and very small numbers most every day, scientific notation is a must.  My students must be able to:
  • Write numbers in scientific notation.
  • Change numbers from scientific notion to standard form, and vice versa.
  • Add and subtract numbers that are in scientific notation.
  • Multiply and divide numbers that are written in scientific notion.
This is a much needed skill in a high school science class.  It is well worth the time to spend a class period reviewing and reinforcing these concepts.

The resources I use in my teaching can be found here:

If you're building a stronger science classroom, don't miss my blog postThe Ultimate Guide to Teaching Science Process Skills. It brings together years of classroom-tested teaching ideas into one resource library.

Science Skills: Applying the Scientific Method


Teaching the “skills of science” is of the utmost importance.   I cannot stress this enough!  Yes, the "content of science" is important, but the content cannot be taught to our students until the skills are taught to our students. Scientific method, metric measurement, scientific notation, prefixes and suffixes, significant figures, compare/contrast, problem solving, critical thinking, dimensional analysis, proper use of lab equipment, scientific writing ... these are the skills I am referring to.  If the skills are taught properly at the beginning of the school year, your students will be equipped with the tools they need to be successful for the rest of the year.  Science is more than the memorization of a long list of facts.  Science is problem solving, analyzing, predicting and experimenting.  Make the teaching of basic science skills a priority in your class.

In a previous article, I talked about the importance of graphing skills.  Today, I want to talk about the importance of being able to apply the scientific method.  The key word here is...... apply.  You may be thinking, "I teach the scientific method every year during the first week of school."  Many teachers have their students write down the 5 or 6 steps to scientific method, define some keywords such as hypothesis, variable, and theory, re-state the 6 steps on a test, and .... DONE!  Time to move on to the next topic.  

We can do better than that.  Teaching our students how to apply the steps of the scientific method is not easy, and it takes up quite a bit of valuable class time.  We have to create lessons that teach the application of the scientific method, not lessons that teach the memorization of the scientific method.  

At the beginning of the school year we should give assignments that:
  • Reinforce graphing skills.
  • Teach students to interpret and analyze graphs.
  • Provide writing prompts to teach students how to design a controlled experiment.
  • Teach students to identify the independent and dependent variables in an experiment.
  • Teach students how to apply the scientific method to a particular scenario.
  • Give students practice in scientific writing.
Please get away from using only multiple choice, true and false, and matching questions.  I try as much as possible to have my students WRITE.  It is very time consuming to grade, but when students are asked "to design an experiment to show..." , you are teaching so many of the above skills.  And you are not just teaching the scientific method.  You are reinforcing critical thinking, problem solving, and best of all, good writing skills.

If you are just beginning to develop lessons on the scientific method, try my Scientific Method PowerPoint.  This is a 26 slide PowerPoint presentation on the nature of science and the scientific method.  The slides are colorful and visually appealing.  Steps of the scientific method are covered, but more importantly, the lesson provides examples and practice problems illustrating the application of the scientific method.  Analysis questions and answers are included.  The download also includes 4 pages of notes for the teacher and a 5 page outline of the notes for the student.  


Now take your students to the lab and see how well they can apply what they have learned about the scientific method.  My "
Can Your Students Write a Clear and Concise Procedure" is a great introduction into scientific writing. It's a fun activity that reveals to students the importance of accuracy and details when writing in science.  






Now you are ready to teaching students how to design and carry out a controlled experiment.  Start with this classroom activity (Applying the Scientific Method and Scientific Writing) involving hypothetical situations.  

Forge ahead with a student-designed lab activity:  The Scientific Method Lab. Students will plan and carryout the entire process from start to finish.  Full disclosure ... This takes time and quite a bit of patience, but it is worth it.  Your students will hone their problem solving and critical thinking skills as they complete these activities.

If you're building a stronger science classroom, don't miss my blog postThe Ultimate Guide to Teaching Science Process Skills. It brings together years of classroom-tested teaching ideas into one resource library.