5 Science Skills Your Students Are Missing (and Easy Ways to Teach Them in Class))

Science skills for students go far beyond following directions in a lab. High school science students need opportunities to design experiments, analyze data, solve problems, and communicate evidence clearly. These science skills help students think like real scientists while building confidence across biology, chemistry, and physical science.

If your students can complete a lab but struggle to explain their thinking, interpret messy results, or design their own investigations, they may need more practice with core science skills. The good news is that you do not need to overhaul your curriculum to build these skills. A few targeted activities can make a big difference.

What science skills should students learn?

Science students need more than content knowledge. They need skills that help them think, analyze, and communicate like real scientists. The most important science skills include:

• Designing experiments
• Interpreting data and graphs
• Writing evidence-based explanations
• Solving quantitative problems
• Communicating scientific ideas

These science skills, often referred to as science process skills, are the difference between students who memorize content and students who truly understand how science works. 

What Are Science Skills?

Science skills are the thinking, reasoning, problem solving, and communication skills students use to investigate questions and make sense of evidence. These include skills such as designing experiments, interpreting graphs, writing evidence based explanations, solving quantitative problems, and communicating scientific ideas clearly.

These are the same kinds of skills students use when they create a hypothesis, identify variables, analyze a data table, explain a trend on a graph, or defend a conclusion with evidence. If you want a broader look at essential science process skills, you may also like my post on 17 essential science skills all students need.

Here are five important science skills for students that will help keep learners engaged, challenged, and growing all year long. These strategies are designed specifically for high school science students but can be adapted for middle school classrooms as well.

1. Designing Original Experiments

Many science students perform traditional labs perfectly but freeze when asked to create their own investigations. They have mastered following directions, but not designing experiments. Learning how to plan an investigation is one of the most important science skills students can develop.

How to challenge them:

• Let students redesign one of your favorite labs by changing one variable.
• Have them identify independent, dependent, and controlled variables.
• Ask students to write their own hypothesis, procedure, and data table.
• If time allows, add a peer review round before anyone begins the lab.

Students quickly discover that experimental design requires both creativity and critical thinking. If you want more ideas for teaching this skill, you might also like Teach the Skills, Please and applying scientific methods in class.

💡 Ready made help: Try my Scientific Method and Experimental Design Lab, a scaffolded activity that walks students through the process of planning their own experiment from scratch. It is editable, printable, and includes a full teacher guide and answer key.

2. Interpreting Complex Data and Graphs

Science students often learn how to make neat graphs, but many still struggle to interpret what the data actually means. They may miss trends, overlook anomalies, or have trouble explaining possible sources of error. Interpreting data is one of the most valuable scientific skills for students because real science is rarely neat and tidy.

How to challenge them:

• Present messy data sets from real world studies or classroom experiments.
• Ask students to identify trends, outliers, and possible sources of error.
• Have them explain what might happen if one variable changed.
• Encourage students to support their observations with evidence from the graph or table.

This strengthens scientific reasoning and helps students move beyond simply making graphs. For more practice with comparing and interpreting observations, you may also like science skills for comparing and classifying.

💡 Ready made help: My Graphing and Data Analysis Worksheets and Quiz make a great bridge between basic graphing and higher level interpretation. They are fully editable and perfect for differentiating within one class period.

3. Writing Evidence Based Explanations

Even strong students sometimes write weak conclusions. They summarize what happened in the lab, but skip the reasoning behind the results. Writing evidence based explanations helps students connect observations to scientific ideas, which is a skill they will use in every science course.

How to challenge them:

• Use the CER model, which stands for Claim, Evidence, and Reasoning, to structure student thinking.
• Show examples of both strong and weak lab conclusions for students to critique.
• Have students revise a weak paragraph using evidence drawn directly from their data.
• Ask students to explain not just what happened, but why it happened.

These practices strengthen communication and clarity while helping students think more deeply about the science. Strong scientific writing also supports success in other content areas and on assessments.

💡 Ready made help: My Scientific Writing and Analysis Worksheets help students craft well supported explanations and practice scientific writing step by step.

4. Quantitative Problem Solving

Quantitative problem solving is another key science skill for students. When students use numbers to explain real phenomena, science becomes more meaningful. Whether students are calculating moles, density, percent composition, or changes in mass during osmosis, math helps them see the evidence behind the concept.

How to challenge them:

• Embed calculations within engaging, real life examples.
• Ask students to explain in words what each number means.
• Use examples such as density, percent composition, mole conversions, or membrane transport data.
• End with a what if question that changes one part of the problem.

If your students need more support with the math side of science, you may also want to read Unlock Success in Science by Mastering Math Skills.

💡 Ready made help: Chemistry teachers can check out my Mole Chat Lab Station Activity. Biology teachers may prefer my Cellular Membrane Transport Lab.

5. Communicating Like a Scientist

Science is not just about getting correct results. Students also need to communicate their ideas clearly and accurately. When students can explain vocabulary, defend a conclusion, present data, and summarize a process for others, they are demonstrating real mastery.

How to challenge them:

• Have students present lab findings and conclusions to classmates.
• Use peer review checklists to give structured feedback on clarity and accuracy.
• Ask students to create an infographic, slide, or visual summary of an investigation.
• Encourage students to explain scientific vocabulary in language non experts can understand.

Communicating science effectively builds confidence and helps students transfer their learning to other classes and real life situations.

If you want students to strengthen communication while applying science concepts, this is another area where skill based instruction really pays off.

💡 Ready made help: My Evolution Lab, Making Coacervates includes a student designed experiment and opportunities for students to communicate findings in a written lab report or by sharing their experiment orally with classmates.

Final Thoughts

Challenging students in science does not mean assigning more work. It means giving them better opportunities to think, reason, solve problems, and communicate like scientists. Focusing on core science skills helps students succeed not only in science class, but across disciplines.

If you are looking for more ways to strengthen science skills in your classroom, you may also like these related posts:

• 17 Essential Science Skills All Students Need
• Teach the Skills, Please
• Science Skills: Comparing and Classifying
• Science Skills: Applying Scientific Methods
• Unlock Success in Science: Master Math Skills
• How to Teach Science Vocabulary Using Prefixes and Suffixes

💡 Ready made help: Explore my Science Skills Mega Bundle filled with labs, notes, quizzes, and digital activities to make skill building seamless and fun.

It's February ... And That Means Daphnia Love is in the Air!

This post has been updated.

Click here to view the updated Daphnia heart rate lab.

How to Teach Experimental Design in Science: Helping Students Design a Scientific Experiment

🔬 How to Teach Students to Design an Experiment

How do you teach students how to design an experiment from start to finish? Teaching experimental design can feel overwhelming, but with the right instruction and simple starter labs, students can successfully plan, carry out, and analyze their own scientific investigations.

Learning how to design an experiment is one of the most important science skills students will develop. When students begin designing their own scientific experiments, they move beyond simply memorizing the steps of the scientific method and start applying those ideas to real investigations. However, guiding students through writing procedures, identifying variables, designing data tables, and drawing conclusions takes intentional instruction and practice.

If your students need structured support before designing their own experiment, my Scientific Method PowerPoint and Notes set provides guided instruction and practice with variables, controls, and hypothesis writing. It is designed to build the foundation students need before moving into student designed labs.

Many teachers wonder what the first step is when designing an experiment. Before students can design a scientific experiment independently, they must understand variables, controls, and how to structure a lab investigation.

Why Teaching Experimental Design Matters

Students must move beyond memorizing the steps of the scientific method. They need to apply those steps to real problems. When students design their own experiment, they develop critical thinking, problem solving, and analytical skills that extend far beyond one lab activity.

Teaching experimental design does take time. It requires modeling, structured practice, and patience. But the payoff is worth it. When students can independently design and carry out an experiment, they demonstrate true understanding of scientific thinking.

Helping students learn how to design and conduct experiments is an important part of any biology course, and these skills are often built into a complete high school biology curriculum so students can apply them consistently across different units.

Teaching the Scientific Method Before Students Design the Experiment

Before students design their own experiment, they must understand how the scientific method works in practice. Starting with a simple experiment design helps students focus on structure rather than complex content.

Students should be able to:

• Identify independent and dependent variables

• Recognize control groups

• Explain constants

• Write a testable hypothesis

• Analyze data

If your students need structured instruction before moving into student-designed labs, a guided lesson on applying the scientific method can provide that foundation. Direct instruction combined with practice examples builds the confidence students need before they begin working independently.  If your students need structured instruction before designing their own experiment, this Scientific Method PowerPoint and Notes Set provides guided instruction and practice with variables, controls, and hypothesis writing.

Teach Students How to Write a Clear and Repeatable Lab Procedure

One of the most overlooked parts of experimental design is writing a clear and repeatable procedure.

Before asking students to design a full experiment, have them practice writing step-by-step lab instructions.

A simple and engaging activity is to give students building materials such as:

• Legos

• Jenga blocks

• Tinker toys

• Gumdrops and toothpicks

• Pipe cleaners

• Paper clips

  

  
  

Students build a structure and then write detail instructions explaining how to recreate it. Their partner follows only the written procedure to attempt to rebuild the structure

This activity highlights:

• The importance of clarity

• The need for precise language

• The value of sequential organization

• Why vague instructions cause experimental error

Once students see how difficult it is to follow unclear directions, they better understand why strong procedures matter in science. This activity, Can You Write a Clear and Concise Lab Procedure, is perfect for this instructional step.

Start With a Simple Student Designed Experiment Lab

When students are ready to design their own experiment, start simple.

For our first student-designed investigation, students tested the effect of different quantities of water on radish seed germination.

This topic works well because:

• Variables are limited

• The procedure is manageable

• Results appear quickly

• No advanced background knowledge is required

Radish seeds germinate within 24 hours, allowing students to collect data over several days and observe measurable differences. The first time I tried this, I was surprised at how quickly the radish seeds germinated. Within 24 hours, my students were already arguing about which group had the strongest results.

What Students Must Include When Designing an Experiment

When students design their own experiment, they must complete each of the following components:

• State a testable hypothesis

• Write a detailed procedure

• Identify the independent variable

• Identify the dependent variable

• Describe the control group

• Explain experimental groups

• Identify constants

• Design a data table

• Create a graph

• Form a conclusion based on collected data

Providing this checklist helps students organize their thinking and ensures that all critical elements of experimental design are included.

Student Designed Experiment Lab Activities for Your Classroom

If you are looking for more ways to incorporate student-designed investigations into your classroom, here are a few additional lab activities:

• The Student Designed Lab

• Measuring the Heart Rate in Daphnia

• Making Coacervates

Each of these labs provides structured guidance while still allowing students to take ownership of the experimental design process.

Final Thoughts on Teaching Experimental Design

Teaching students how to design an experiment is not a quick lesson. It requires modeling, guided practice, and gradual release of responsibility. However, when students are given the opportunity to plan and carry out their own investigations, they develop confidence and true scientific understanding.

Experimental design is a skill that students will carry with them far beyond your classroom. Whether you are teaching middle school or high school, structured practice in experiment design builds long-term scientific reasoning skills.

Looking for more information on a ready-to-use student designed experiment lab activity? Read my post on implementing a full student designed lab in your classroom.

Frequently Asked Questions About Teaching Experimental Design

What is the first step when teaching students to design an experiment?

The first step is ensuring students understand the scientific method and can identify independent and dependent variables, control groups, and constants. Before students design a scientific experiment independently, they need structured instruction and guided practice.

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How do you help students design a simple experiment?

Start with a simple experiment design that limits variables and focuses on structure. Choose a topic that does not require advanced background knowledge so students can concentrate on writing procedures, identifying variables, and organizing data.

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What should students include when designing a scientific experiment?

Students should include a testable hypothesis, detailed procedure, identified variables, control group, constants, data table, graph, and conclusion based on collected data.

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Why is experimental design important in science class?

Teaching experimental design helps students develop critical thinking, problem solving, and analytical skills. When students design their own experiments, they move from following directions to thinking like scientists.

Daphnia Heart Rate Lab for Biology that Students Love

Watch Their Hearts Beat: A Daphnia Lab That Brings Biology to Life

If you’re looking for a biology lab that’s easy to set up, actually engages students, and still hits real science skills, this Daphnia heart rate lab is one of my favorites. Students observe the beating heart of a live Daphnia under the microscope, test the effect of temperature on heart rate, and then extend the investigation by designing their own experiment. It is the kind of lab that feels exciting for students while still building serious biology skills.

Daphnia are tiny aquatic crustaceans, sometimes called water fleas. Their transparent exoskeleton makes the beating heart visible under low power, which makes them ideal for a lab on physiology, environmental effects on organisms, graphing, and experimental design. This lab gives students the rare chance to work with a living organism and collect real data in a way that is visual, concrete, and highly engaging.

This lab is also classroom friendly. It is low prep, easy to implement, and flexible enough to use with standard biology, honors biology, and AP Biology students. If you want a ready to use resource with student handouts, graphing pages, extension activities, and teacher guidance, you can find it here: Measuring Heart Rate in Daphnia Lab.

What Students Observe During This Daphnia Heart Rate Lab

In this lab, students observe the beating heart of Daphnia and investigate how temperature affects heart rate. Because Daphnia are ectotherms, their body temperature changes with the surrounding environment, which makes temperature an excellent variable for students to study. As students compare conditions, they can see physiology in action instead of only reading about it in a textbook.

This first part of the lab gives students a structured, guided investigation. They collect data, graph their results, and answer analysis questions. The experience helps students connect temperature, metabolism, and organismal function while practicing core science skills in a meaningful context.

Helping Students Locate the Daphnia Heart

One of the biggest challenges in a Daphnia heart rate lab is helping students find the heart. The digestive system of Daphnia is active, and students often mistake that movement for the heartbeat. The heart is located just behind the head on the dorsal surface of the body, and it appears as a very small, clear, transparent beating sac.

That is one reason this resource includes a diagram for each lab station. Having a visual reference makes a big difference and helps students begin the lab with more confidence. It also reduces frustration and saves class time because students are more likely to focus on the correct structure from the start.

If you teach body systems, you might also like this related post on the circulatory system interactive notebook.

How This Lab Works in Your Classroom

This resource actually includes three different activities, which makes it much more than a simple one day microscope lab.

First, students follow the lab procedure to determine how temperature affects the heart rate of Daphnia. This is the structured part of the lab and works well for a wide range of learners.

Second, students can design their own experiment to test the effect of a new variable on Daphnia heart rate. This is where the lab becomes especially valuable because students move beyond following directions and begin thinking like scientists.

Third, honors and AP Biology students can complete the Q10 Temperature Coefficient worksheet for a deeper quantitative extension.

This structure gives you flexibility. You can stop after the guided temperature lab, or you can extend the activity into a more advanced investigation. That makes it easy to adapt for your schedule, your students, and the level of rigor you want.

Extending the Lab with Student Designed Experiments

One of the strongest parts of this Daphnia lab is the student designed experiment. After students complete the guided temperature investigation, they can use the scientific method to design an experiment that tests the effect of a different variable on heart rate. In my classroom, this is where the fun really begins.

Students state a hypothesis, identify control and experimental groups, carry out the procedure, collect data, graph their results, and write a conclusion based on the evidence. This part of the lab takes more time, but it also leads to some of the best learning. Students quickly discover that real experimentation requires careful planning, revision, and problem solving.

If you are nervous about student designed experiments, do not be. With guidance on the front end, students often surprise you with their creativity and persistence. This part of the lab is excellent for reinforcing experimental design in a way that feels authentic rather than forced.

Differentiation for Honors and AP Biology

This lab also includes a Q10 Temperature Coefficient worksheet, which makes it especially useful for honors and AP Biology classes. Students can move beyond simple observation and graphing into a more advanced analysis of how temperature affects biological processes.

That means this resource is not limited to one level of biology. The first activity is accessible enough for many high school students, while the later extensions provide the rigor needed for advanced learners.

What This Looks Like in Your Classroom

Students assemble a simple habitat chamber using depression slides, a pipet, and other basic materials. They observe the beating heart under the microscope, compare the effect of different temperatures, record heart rate data, and graph their results. From there, you can extend into a student designed investigation and formal lab report if you choose.

This is the kind of lab that keeps students interested because they are working with a living organism and collecting real data. It also gives you a natural opportunity to teach careful observation, ethical treatment of organisms, graphing, analysis, and experimental design all within one lab sequence.

Please note: Teach students to respect all living organisms. No harm should come to the Daphnia during this experiment.

Why Teachers Love This Lab

This lab is a favorite of mine every year because it combines genuine student excitement with meaningful biology content. Students love looking at living organisms under the microscope, and Daphnia are especially fascinating because the beating heart is visible. At the same time, the lab goes far beyond novelty.

This investigation helps students practice:

• Graphing and analyzing data
• Comparing variables and controls
• Designing and carrying out investigations
• Problem solving and critical thinking
• Connecting environmental change to organismal response

It also supports the kind of hands on biology experience that teachers want in the classroom. Working with living organisms helps students build curiosity, observation skills, and appreciation for the living world.

When the lab is over, my Daphnia spend the rest of their days in my Elodea tank.

What Is Included in This Resource

This Daphnia heart rate lab includes everything you need for successful implementation:

• Editable lab handouts ready to print and use
• Complete instructions
• Diagram for each lab station to help students locate the beating heart
• Student designed experiment handouts
• Q10 Temperature Coefficient worksheet
• A teacher guide with setup instructions, tips, tricks, and suggestions
• A complete answer key with sample data, sample graph, and answers

That combination makes this much more than a simple worksheet or one day activity. It is a complete lab sequence that can be adapted to the needs of your classroom.

Ready to Try This Daphnia Heart Rate Lab?

If you are looking for a complete, ready to use Daphnia heart rate lab that saves prep time and gives students a meaningful biology experience, this resource is a great fit. It combines microscope work, physiology, graphing, scientific method, and optional advanced extensions in one engaging package.

Click here to view the resource: Measuring Heart Rate in Daphnia Lab

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.