Projects, Lessons, Activities (Page 20)

Popsicle Stick Chain Reaction

STEM Activity

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140 reviews

If you enjoy chain reactions and spectacular sights, this activity is for you! Who knew weaving unspectacular tongue depressors could set off a chain reaction of sticks flying in the air? Try it out and see for yourself! Read more

Rocket Catcher Challenge

Science Fair Project Idea

Engineering Design Process

Inspired by real-world reusable rockets, in this engineering challenge, you will design and build a device to catch a falling rocket so it lands vertically. Drop the rocket from higher and higher heights to get a better score! The 2025 Science Buddies Engineering Challenge is over, but you can check out this page to see our other past engineering challenges and what this year's challenge will be! Teachers, lesson plan versions of this challenge are also available. Read more

Teaching the Scientific Method with Paper Rockets

Lesson Plan Grade: 3rd-5th

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28 reviews

This lesson will introduce your students to the scientific method using a fun, hands-on activity. A middle school version of this lesson plan is also available. Read more

NGSS Performance Expectations:

3-5—Science Practices.

3D Print a Drone Frame

Science Fair Project Idea

Engineering Design Process

Drones come in all shapes and sizes. In this engineering project you will design and 3D-print your own frame for a miniature drone. Read more

Balloon Car Lesson Plan

Lesson Plan Grade: 6th-8th

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36 reviews

Your students will design, build, and race balloon-powered cars in this fun lesson plan that teaches about engineering design and kinetic and potential energy. Read more

NGSS Performance Expectations:

MS-PS3-5. Construct, use, and present arguments to support the claim that when the kinetic energy of an object changes, energy is transferred to or from that object.
MS-ETS1-4. Develop a model to generate data for iterative testing and modification of a proposed object, tool, or process such that an optimal design can be achieved.

Build a Mini LED Lightsaber

STEM Activity

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142 reviews

Build your own mini LED lightsaber with a straw in this quick Star Wars-themed STEM activity. May the Force be with you! Read more

Burning Calories: How Much Energy is Stored in Different Types of Food?

Science Fair Project Idea

Scientific Method

Have you ever wondered how nutritionists know how many Calories a certain food contains? In this project you will learn a method for measuring how many Calories (how much chemical energy) is available in different types of food. You will build your own calorimeter to capture the energy released by burning a small food item, like a nut or a piece of popcorn. This project gives a new meaning to the phrase "burning calories!" Read more

Can Peppermint Improve Reaction Times?

Science Fair Project Idea

Scientific Method

Did you know that some teachers give their students a peppermint candy on state testing days? Is it to give the kids sweet-smelling breath? Or are the teachers hoping for something more on the important testing day? In this human biology science fair project, you'll explore whether or not peppermint influences scores on different types of tests. Read more

Explore the Mixing Behavior of Liquids

Science Fair Project Idea

Scientific Method

Have you ever wondered why some liquids mix together easily, like when you mix different juices to make a fruit punch, while others do not mix at all, like oil and water? What happens to liquids when they are mixed depends on their mixing behavior. Some liquids blend, whereas others form separate layers. If you do it right, you can even stack liquids on top of each other just like solid objects! Want to see for yourself? In this science project, you will investigate the mixing behavior of… Read more

Human Body Ratios

STEM Activity

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28 reviews

Our bodies are amazing! They are full of mysteries and surprising facts like this one: did you know that you are about a centimeter taller in the morning, when you have just woken up after hours of lying down, than you are in the evening? You might never have noticed it. These interesting facts only reveal themselves when you look closely, measure, and compare. That is what this activity is about: measuring, comparing, and discovering how the human body measures up. Read more

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