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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.”

Lab Safety Tip of the Week #3:

Tip #3:
Be Ready for the Students to Return to Class!

Required reading for this week:  Worst Lab Accidents in History:  Labs are Dangerous!

In today's lab safety tip of the week, I wanted to present some statistics about accidents in school labs.  After doing some internet searching I have come to realize that there is very little in the way of statistics about school lab accidents.  You can find lots of articles about individual accidents, but there is not any cumulative data that I could find.  How many kids get hurt each year?  How many are burned by heat?  How many suffer from chemical  burns?  I wonder how shocked we would be if we had the answers to these questions.

Many students have already returned to classrooms across the country, and the rest will soon follow as Labor Day approaches.  So the focus of the tip of the week is ... Are you ready for the students to return to class?  I am not referring to such things as having enough desks in your room, or getting paper from the supply room.  What I mean is:  Do you have your lab safety plan in place and ready to roll out when students enter your room?

Here is a checklist of things to consider and to have ready when students return to your class:

  • Lab has been inspected.  You have checked all water faucets, electrical outlets and gas jets.  Work orders have been submitted for any faulty items.
  • You have cleaned and tested the eyewash fountain.
  • You have tested the safety shower.
  • Fire blanket is accessible.
  • Fire extinguisher has been inspected.
  • You have enough goggles for each student.  
  • YOU HAVE CLEANED THE GOGGLES!
  • Lab aprons are clean and readily available. 
  • Lab tables are clean and each lab station is stocked with basic items.  
  • Sinks are clean and drain properly. 
  • Chemicals are properly stored and locked in a chemical storeroom.
  • Any unlabeled chemicals should be discarded from the chemical storeroom.
  • Fume hood has been inspected to insure that it draws properly.
  • Glassware has been inspected.  Chipped and broken pieces have been discarded.
  • Exits from the lab are properly marked and unblocked.
  • Lab safety rules are posted in the classroom and in the lab area.
  • Have a handout of lab safety rules, and make enough copies for each student.
  • Have a lab safety contract and have each student and their parents sign it.  Keep on file all year long.
  • Have a medical emergency form for each student.  Be aware of the allergies or other medical conditions of your students.
  • Lecture on lab safety at the start of the year.
  • Prepare a quiz or test on lab safety.  Require each student to score 100% before allowing them in the lab.
  • Have MSDS (Material Safety Data Sheets) for each chemical you plan on using in a lab activity.
  • Talk to your administrator about how a crisis will be handled.  How will you summon help in an emergency?
Whew! There is a lot to do to get ready for our students to return to class!  To sum it up, the lab safety tip of the week is:  Be proactive, be prepared and be ready when the students return.

Have a great school year!


Lab Safety Tip of the Week #2


Tip #2:  
Make Use of Online Resources

Required reading for this week:
8 Violations for School in Wake of Lab Fire

Science teachers simply cannot receive enough training in laboratory safety.  For the first year science teacher, training in laboratory safety is a MUST!  But what about the veteran teachers?  After teaching for 30+ years, do I still need to receive training in laboratory safety?  The answer to that is an emphatic YES!!

Teachers are often asked to plan their own professional development.  In my school district, science teachers from all schools in the district meet as a group before students start school.  After school is in session, the science department within my school has monthly meetings.  I feel sure that this type of professional development occurs in other districts as well.  One priority of these annual or monthly meeting should be refresher courses in laboratory safety.

There are many, many online resources available to science teachers in laboratory safety training. And most of them are FREE.  At every single inservice held at the start of the school year, safety training should be required.  Check out the free lab safety videos from Flinn Scientific. Flinn offers 9 courses in laboratory safety, and each of them is free.  In this video, you can get an overview of all the safety training made available by Flinn,  Take advantage of this amazing resource!  Show one or more of these safety videos in your science department meetings.  (Please note that while I am a big fan of Flinn Scientific, I am in no way connected with this company.)  You can also find very comprehensive (and free) materials at Carolina Biological.

In reading about laboratory safety for this post, it seems that most accidents are occurring in the labs of veteran teachers.  I think arrogance, complacency, and "letting down your guard" are probably to blame.  This is the reason veteran teachers need continuing education in lab safety.  Will a veteran teacher learn anything new from such training?  Maybe not.  But it brings the issue of lab safety to the forefront of our thinking.  We need to be reminded, and often!

To sum it up, the lab safety tip of the week is:  Make Use of Free Online Resources to offer continuing lab safety training for the teachers in your department.

Links to other resources include:

The Lab Safety Institute
Environmental Health and Toxicology
Lab Safety Guidelines
OSHA Guidelines on Lab Safety


Excretory System Warm Ups for High School Biology

If you are teaching the excretory system in your biology class, you already know that this topic can be challenging for students. Understanding how the body maintains internal balance through filtration, reabsorption, and excretion requires students to connect several complex processes.

These Excretory System Warm Ups and Bell Ringers are designed to help students build understanding step by step while giving you a structured, consistent way to review key concepts each day.

What Is the Excretory System?

The excretory system is responsible for removing waste products from the body and maintaining homeostasis. This system helps regulate water balance, remove nitrogenous wastes, and keep the internal environment stable.

How the Kidneys and Nephrons Work

Inside each kidney are millions of tiny filtering units called nephrons. These structures carry out the processes of filtration, reabsorption, and secretion. These processes can be difficult for students to visualize, which is why consistent review is so important.

excretory system warm ups topics kidney nephron function biology worksheet

Excretory System Warm Ups and Classroom Activities

If you are looking for a way to reinforce these concepts in a manageable and consistent way, daily warm ups can make a huge difference. These short activities give students repeated exposure to key ideas while helping them build confidence over time.

excretory system warm ups classroom activity biology daily review worksheet

This resource includes 18 warm ups covering kidney structure, nephron function, filtration, water balance, and homeostasis. These activities can be used as bell ringers, homework, exit slips, or quick assessments.

excretory system warm ups google slides biology digital classroom activity

These warm ups are available in both printable and digital formats, making them easy to use in traditional classrooms or assign through Google Classroom.

excretory system warm ups classroom uses bell ringers exit slips biology

These activities are flexible and can be used in a variety of ways including warm ups, bell ringers, exit slips, homework assignments, and short daily quizzes.

This resource is also part of the complete Human Body Warm Ups Bundle, which includes all major body systems for year long biology instruction.

Frequently Asked Questions

What is the function of the excretory system?
The excretory system removes waste products and helps maintain homeostasis by regulating water and chemical balance.

What do the kidneys do?
The kidneys filter blood, remove waste, and regulate fluid levels in the body.

What is a nephron?
A nephron is the functional unit of the kidney that carries out filtration, reabsorption, and secretion.

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More Human Body Warm Ups and Bell Ringers for High School Biology

Build a complete human body review routine with these related blog posts featuring warm up activities for high school biology.

Science Wear: Fun Classroom Activity!

Are you looking for something different (and fun!) for your science classes?  Well, look no further.  Science Wear is an affordable alternative to traditional classroom activities.

What exactly is Science Wear?  
Science Wear is a "hand-on, wearable science project."  Students are given the materials and the instructions on how to design and paint their very own t-shirt, apron or lab coat.  The shirts, aprons and lab coats come preprinted with an outline of the design.  Students paint, embellish, and label the structures on their shirt.

What are the benefits?
This is a fantastic way to reinforce the science skills that we teach every day in our classes.  The hands-on nature of the project is perfect for the visual learners.  Students get excited about science and love to wear their shirts at school.  (Just don't let them wear them on test day!)

Outside of the classroom, Science Wear is perfect for science club meetings, STEM clubs, birthday parties, and working on badges for scouting.  Kids learning while having fun ... Win-Win!

How can I learn more?
Check out the Science Wear website.  Jody Hodges (owner of Science Wear) has really outstanding "how-to" videos on YouTube.  You can also find her on Facebook and Pinterest.

Lab Safety Tip of the Week #1

Lab Safety:
Make It A Priority!

Another school year is about to begin. Do you have a lab safety instruction unit ready to use with your science students?

Every year at this time, science teachers must review how they are going to address lab safety with biology and chemistry students. Lessons and materials used with students need to be updated. Solid lab instruction will help ensure that another school year will pass and your lab will remain accident free.

Our science students absolutely need GREAT lab experiences. They need to use chemicals, Bunsen burners, hot plates, and glassware. To do less would be depriving them of a good science education. If you make laboratory safety a top priority with the students, they will respond. When they see you being safe and stressing safety at the beginning of each lab, they will behave appropriately. And if they don't, drastic measures will have to be taken before that student can enter the lab again.

One goal that I set for my blog, is to post a "Lab Safety Tip of the Week." To prepare for this series of blog posts, I did some online searching into lab accidents.  I was looking for up to date statistics about safety in middle and high school labs. While I haven't yet found the stats I am looking for, I did come across this video. It is posted by CSB: US Chemical Safety Board. The video is called, "After the Rainbow."  Without reading another word of this blog post, take 5 minutes to watch this video.

Did you watch it?  If that doesn't make you stop and consider your lab safety instruction, nothing will.

Back to the Lab Safety Tip of the Week.  Here is my first lab safety tip.


Before students walk in the door, have a plan.  The first few days of your class must include the following:
  • Students must get written copies of your lab safety rules.
  • You must go over each and every rule.
  • Take the students to the lab and point out all of the lab safety features:  Eyewash, safety shower, fire extinguisher, fire blanket, etc.
  • Students must sign a lab safety contract.  Parents must sign it too!
  • Students and parents must fill out a medical emergency form.
  • Students must take and pass a lab safety quiz.
Make sure that you know what you are going to do in case of an emergency. Talk to your school admin to make sure that all parties agree on a plan of action.  

Lab Safety Tip of the Week #1:  Develop and implement a lab safety plan.

Looking for a place to start?  These resources are posted in my TpT store:







Good lab safety instruction is essential in providing safe lab experiences for our students.  Good luck!

First Day of School Chemistry Activity: Chemistry Chat Lab Stations

If you are looking for a first day of school chemistry activity that gets students moving, talking, and thinking scientifically, Chemistry Chat is one of my favorite ways to begin the school year.

The first day of chemistry class sets the tone for the rest of the year. Students walk in wondering what the class will be like, whether they know anyone, and whether chemistry is going to be difficult. Instead of beginning with a long syllabus review, this chemistry icebreaker activity gives students a structured way to meet classmates while completing short science tasks at lab stations.

👉 Ready to start your year with an engaging chemistry activity?

👉 Click here to see Chemistry Chat

A Better First Day of School Chemistry Activity

Many first day activities help students get to know one another, but they do not always tell you much about your students as science learners. Chemistry Chat does both. Students meet classmates, rotate through stations, and complete short chemistry-related tasks that give you an early look at observation skills, graphing skills, lab safety awareness, science vocabulary, and comfort level with basic chemistry concepts.

Instead of having students sit passively while you read rules and procedures, this activity gets them out of their seats right away. It helps build classroom community while also showing students that chemistry class will involve discussion, observation, problem solving, and hands-on learning.

What This First Day of School Chemistry Activity Looks Like

This resource includes 10 chemistry lab stations. Students rotate through the stations, complete a short science task, and answer an icebreaker question with the students at their station. Because students change groups as they move, they meet more classmates than they would in a traditional seated activity.

Each station is short and manageable. Students might study a graph, identify lab equipment, observe a simple demonstration, use the periodic table, or think about the difference between physical and chemical properties. At the same time, they are learning names, sharing interests, and beginning to feel more comfortable in your classroom.

What Students Do at Each Lab Station

At each station, students complete a chemistry-related task and answer a social icebreaker question. This combination is what makes the activity so useful. It is fun enough for the first day of school, but structured enough to feel like a real science class activity.

Students record their answers on individual handouts, which gives you a useful first look at how they approach science questions. You can grade the activity for participation and effort rather than correctness, which helps students start the year with a successful classroom experience.

Topics Covered in Chemistry Chat

Each station focuses on a different introductory chemistry or science skill. This makes the activity useful as both an icebreaker and a quick diagnostic tool.

  • Chemical and Physical Properties
  • Graphing
  • Metals and Nonmetals
  • Periodic Table
  • Lab Equipment
  • Laboratory Safety
  • Making Observations and Forming a Hypothesis
  • Metric Scavenger Hunt
  • Chemistry Prefixes and Suffixes
  • Chemical Symbols

You do not need students to know all of the answers on the first day. In fact, that is part of the value of the activity. You get to see what students already know, where they are unsure, and how they work with others when a question feels unfamiliar.

Easy Setup with Common Lab Materials

Chemistry Chat is designed to be practical for the busy first week of school. The materials are common items you likely already have in your lab or classroom, such as a flask, magnet, starch, iodine, lab equipment, raisins, club soda, periodic table, and metric measurement objects.

Setup usually takes less than 30 minutes, especially if the station cards are already printed and laminated. You can use all 10 stations over two class periods, or choose fewer stations if you need a shorter back-to-school chemistry activity.

Why This First Day Chemistry Activity Works

The first day of school should feel welcoming, not overwhelming. Chemistry Chat gives students a reason to talk to one another, move around the room, and begin thinking like scientists right away.

It also helps you observe your students in a low-pressure setting. You can see how they communicate, how comfortable they are with lab materials, how they respond to unfamiliar questions, and how they work with classmates. That makes this activity more than a simple icebreaker. It becomes a useful diagnostic tool for the teacher.

If you want more details about why this format works so well, you may enjoy reading Why My Chat Lab Stations Work So Well. I also have a post with practical tips for making lab stations work in your classroom.

If you are ready to start the year with a fun, structured, and purposeful first day of school chemistry activity, you can check it out here: Chemistry Chat Lab Station Activity.

More Back-to-School Science Activities

If you like this activity, you may also want to check out these related posts:

PS - There is also a Biology Chat and a Physics Chat too.

Frequently Asked Questions About First Day of School Chemistry Activities

What is a good first day of school chemistry activity?

A good first day of school chemistry activity should help students feel comfortable while also introducing them to the type of thinking they will use in chemistry class. Lab stations work well because students are moving, talking, observing, and solving short science tasks instead of sitting through a long lecture or syllabus review.

How do you make the first day of chemistry class fun?

The best way to make the first day of chemistry class fun is to get students actively involved. A chemistry icebreaker activity with lab stations gives students a chance to meet classmates, move around the room, and begin using observation and reasoning skills right away.

What are chemistry lab stations?

Chemistry lab stations are small activity centers that students rotate through in groups. Each station focuses on a different topic, skill, demonstration, or task. In Chemistry Chat, students complete stations on physical and chemical properties, graphing, metals and nonmetals, the periodic table, lab equipment, lab safety, observations, metric measurement, chemistry vocabulary, and chemical symbols.

How long does Chemistry Chat take?

Each station can take about 10 minutes, depending on how much time you want students to spend talking and working together. You can complete all 10 stations over two class periods, or choose fewer stations if you need the activity to fit into one class period.

What chemistry topics are covered in this activity?

Chemistry Chat includes stations on chemical and physical properties, graphing, metals and nonmetals, the periodic table, lab equipment, laboratory safety, observations and hypotheses, metric measurement, chemistry prefixes and suffixes, and chemical symbols.

Can this chemistry icebreaker be completed in one class period?

Yes. If you only have one class period, you can shorten the activity by using fewer stations or limiting the amount of time students spend at each station. The stations are flexible, so you can choose the ones that best fit your first day schedule.