Seventh Grade Projects, Lessons, Activities (Page 7)

Build a Robotic Arm

Science Fair Project Idea

Engineering Design Process

Robotic arms have many uses, ranging from assembling things in factories to collecting soil samples on Mars to acting as prosthetics (artificial limbs) for humans. If you have ever wanted to build your own robotic arm, this project will guide you through the basics of designing and building a simple one. You can use this design as a starting point to design your own robotic arm and add your own features. Read more

Junkbots: Robots from Recycled Materials

STEM Activity

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298 reviews

Building "junkbots" is a fun activity where you can turn recycled materials—like plastic bottles and cardboard tubes—into robots! This is a great activity for a classroom or a group of friends, because you can race your robots against each other and even make them sumo wrestle. You do not need any previous experience with robotics to build junkbots. A Science Buddies kit is available with all the electronic parts you need, including motors, batteries, and clear instructions for how… Read more

Make Cardboard Automata

STEM Activity

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105 reviews

Have you ever wondered how to create art with moving parts using nothing but cardboard, a few skewers, and some craft supplies? In this fun STEM activity, you will build an automaton, a machine that makes parts appear and disappear, move up and down, spin in circles, or all of these together. The instructions will show you how to build a moving caterpillar, but you can use your imagination to build any other animal or object you want! Read more

Making Homemade Bath Bombs

STEM Activity

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Have you ever had a refreshing bath using a bath bomb? It can be quite the relaxing experience, especially if your bath bomb has a nice fragrance or includes some bath salts. Have you ever wondered what causes a bath bomb to become so fizzy when it touches the water in the bathtub? It is due to a chemical reaction taking place between different ingredients within the bath bomb. In this activity, you will get to make your own homemade bath bombs and explore how changing the amounts of the… Read more

2026 Ball Run Challenge

Science Fair Project Idea

Engineering Design Process

In this engineering challenge, you will build a ball run from paper and tape, but there's a twist! You want to make your ball run as slow as possible. How long can you make it take for the ball to get from the entrance to the exit? Read more

Agrivoltaics: What Crops Grow Best Under Solar Panels?

Science Fair Project Idea

Scientific Method

We need farms for food, and we need solar panels for renewable energy. What if we could combine the two? Find out if certain crops can grow well under the partial shade of solar panels in this agrivoltaics science project. (Note: you do not need access to real solar panels to do this project. Any source of shade will work.) Read more

Build a Gauss Rifle!

Science Fair Project Idea

Scientific Method

What can you do with magnets and ball bearings that makes a lot of noise? Why, build a magnetic linear accelerator, called a Gauss rifle, of course! Now, this magnetic accelerator is not a weapon, but a way for you to learn a lot more about physics concepts, like momentum. In this physics science project, you will investigate how far a ball bearing launched by a Gauss rifle will fly, depending on how many magnetic acceleration stages are in the setup and the ball bearing's initial velocity.… Read more

How to Make a Homopolar Motor

STEM Activity

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228 reviews

What do you need to make a motor? Not much! In this quick activity, you will make a simple motor using nothing but a battery, magnet, and a piece of wire. Read more

Make a Miniature Water Cycle Model

STEM Activity

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165 reviews

Have you ever wondered where the rain that falls from the sky comes from? You might say the rain falls from the clouds, but what are clouds and where do they come from? All these questions and many more can be answered by looking into how water moves on land and in the atmosphere, which is described in the water cycle. In this activity, you will investigate some of the processes that make water move in and out of the atmosphere by making a miniature water cycle model inside a plastic bag. Read more

3D Print with Sand: No 3D Printer Required!

STEM Activity

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Don't have your own 3D printer? No problem! In this fun activity you will make your own colorful 3D prints using craft sand and glue. No 3D printer required! Read more

Seventh Grade Projects, Lessons, Activities (1,070 results)

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