Seventh Grade Projects, Lessons, Activities (Page 54)

Rubber Band Car Challenge for Grades 6-8

Lesson Plan Grade: 6th-8th

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In this fun engineering lesson plan, your students will build rubber band-powered cars using readily available craft supplies. The challenge is to build a car that goes as far as possible while making careful use of materials. Elementary school and high school versions of this lesson plan are also available. This lesson was part of the 2024 Science Buddies Engineering Challenge. Read more

NGSS Performance Expectations:

MS-ETS1-2. Evaluate competing design solutions using a systematic process to determine how well they meet the criteria and constraints of the problem.

Scientific Method: How Do Scientists Make Discoveries?

Video Lesson Grade: 3rd-8th

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This lesson will introduce students to the scientific method using a fun, hands-on activity about the role of animal camouflage in evolution. During the activity, students will practice each step of the scientific method including doing background research, making a hypothesis, conducting an experiment, analyzing data, and drawing conclusions. By going through this process, students will also learn how camouflage helps animals survive. Read more

NGSS Performance Expectations:

3-LS4-2. Use evidence to construct an explanation for how the variations in characteristics among individuals of the same species may provide advantages in surviving, finding mates, and reproducing.
3-LS4-3. Construct an argument with evidence that in a particular habitat some organisms can survive well, some survive less well, and some cannot survive at all.
MS-LS4-4. Construct an explanation based on evidence that describes how genetic variations of traits in a population increase some individuals' probability of surviving and reproducing in a specific environment.
MS-LS4-6. Use mathematical representations to support explanations of how natural selection may lead to increases and decreases of specific traits in populations over time.

Seeing in the Dark

STEM Activity

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Have you ever considered taking a nighttime nature walk? Would you wait until there is a full moon, so you could profit from sunlight reflected on the moon, or would you rather take a flashlight? Do you think trees would look black, green, or grey in the dark? Do this activity to examine your night vision and prepare for your next nighttime adventure! Read more

Separating Mixtures: Can You Design a Device to Do It?

Science Fair Project Idea

Scientific Method

Have you ever looked in the kitchen cupboard and found a container of tiny white grains, but you were not sure if they were sugar or salt? They look very similar. How could you tell them apart? Well, you know that sugar and salt taste very different. Taste is actually called a property, and properties are used to describe and identify different materials. Properties can also be used to physically separate things. In this science project, you will use different properties to create a way to… Read more

Sky Science

Lesson Plan Grade: 4th-8th

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"Mammatus clouds and crepuscular rays" © 2007 Brocken Inaglory Why do we see different colors in Earth's sky at different times of day? After this activity, students will be able to support an explanation for the colors we see in Earth's sky with evidence from a scientific model. Read more

Small, Tiny, Invisible: How Big Is a Virus?

STEM Activity

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Have you ever seen a real virus? Probably not—they are so tiny that it is impossible to see them with your naked eyes. But how big or small are viruses really? The coronavirus Sars-Cov-2, which causes COVID-19, is about 120 nanometers in size. One nanometer is equal to one billionth of a meter! How many of these tiny coronaviruses do you think can you line up inside a pencil dot? In this activity, you will find out by creating a scale model that allows you to compare the size of many… Read more

Spending Habits: Tightwads vs. Spendthrifts

Science Fair Project Idea

Scientific Method

Do you have a hard time hanging on to your money or do you have a harder time letting it go? This project shows you how to conduct a simple survey to measure how people manage their money. Find out what percentage of your classmates are 'spendthrifts' and what percentage are 'tightwads.' Read more

Stomata Printing: Microscope Investigation

Lesson Plan Grade: 3rd-12th

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"Backlit Leaf" © 2011 Threthny Plants have many crucial roles on our planet, and among these is the gas exchange that happens within their leaves. As plants take in carbon dioxide from our atmosphere, they release oxygen and retain the carbon. In this lesson, students will investigate leaves up close to look for the structures responsible for gas exchange. Read more

Study Bottle Rocket Performance with Electronic Sensors

Science Fair Project Idea

Scientific Method

Rocket design and operation is a fascinating field and analyzing the flight path provides insight into the rocket's performance. In this project, you will take measurements of the flight path to evaluate how a change in the rocket design or launch procedure impacts the rocket's performance. Initially, while the bottle rocket expels water (or the rocket expels exhaust), the rocket gets a boost. This push is referred to as thrust and projects the rocket forward. Earth's gravity pulls the rocket… Read more

Teach a Computer to Recognize Road Signs

STEM Activity

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How do driverless cars know how to recognize different road signs? They use something called machine learning. In this activity you will teach a computer to recognize different road signs using photos that you take yourself and a tool called Teachable Machine by Google®. The better the training data, the more accurately the program will be able to recognize different types of signs. Read more

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