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Second Grade STEM Activities for Kids (195 results)

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Erupting Diet Coke® with Mentos®
STEM Activity
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291 reviews
Have you ever seen the Diet Coke® and Mentos® experiment, which is all over the Internet, and wondered what makes the reaction work? You might think that there is some ingredient in a Mentos candy causing a chemical reaction with the soda, like the way baking soda reacts with vinegar. But the amazing eruption that takes place when Mentos are dropped into Diet Coke is not a chemical reaction at all! Instead it is a physical reaction. That means that all of the pieces of the reaction… Read more
How to Make Slime
STEM Activity
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339 reviews
It's gooey. It's sticky. It's slime! Learn to make your own homemade slime with this quick and easy recipe. Read more
Build a Telescope
STEM Activity
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147 reviews
Build your own telescope that you can use to see far-off objects in this fun STEM activity! The type of telescope you will build in this activity is also called a monocular or a spyglass. Read more
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Make String from Algae
STEM Activity
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210 reviews
Did you know that the seaweed you've seen in the ocean or even eaten as a snack is inspiring innovators to imagine new materials? Large brown algae, like kelp, contains polymers—long chains of molecules—that are more environmentally friendly than the ones in most plastics. These natural polymers (alginates) could eventually be used to create sustainable everyday objects. Try your hand at using a bit of chemistry to turn biodegradable polymers from algae into your own custom… Read more
Make a Cotton Ball Launcher
STEM Activity
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471 reviews
Have you ever stretched and launched a rubber band at someone? Put that energy to good use and build a rubber band-powered cotton ball launcher in this fun activity! Read more
Build a Mini LED Lightsaber
STEM Activity
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139 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
Generate Electricity with a Lemon Battery
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237 reviews
Can you imagine how your life would change if batteries did not exist? If it were not for this handy storage of electrical energy, the radio in a car would not function, nor would the lights. A pacemaker or hearing device would need to be plugged into a wall outlet in order to function, and do not forget all portable electronic devices like phones, digital music players, or tablets, which are all powered by batteries. With all the frustration you might have endured coping with dead batteries,… Read more
Make Your Own Harmonica!
STEM Activity
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287 reviews
Can you name the bestselling musical instrument in the world? If you said harmonica, you are right! The harmonica was said to be patented in 1821 by Christian Buschmann, a 16-year-old German boy. Since then, it has become the top-selling instrument in the world and a household item in many places. Luckily, creating beautiful noise is not just an art—it is also a science! In this activity, you will design and explore your own harmonica-like instrument made from household items. Time to… Read more
Build a Wind-Powered Car
STEM Activity
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350 reviews
Is that a sailboat or a sail...car? Design and build a toy car powered by the wind in this fun engineering project! Read more
DIY Mini Drone
STEM Activity
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287 reviews
Quadcopters, also called drones, are a fun and popular toy. Explore the world of drones as you build your own mini drone using popsicle sticks in this fun activity. See this page for a complete list of our mini drone projects. You may wish to do the projects in order. Read more
Walking Water
STEM Activity
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217 reviews
Imagine this challenge: You have two glasses of water—one empty and one full. You want to pour half of the full glass into the empty one. The twist? You aren't allowed to pick up either glass! Can you get the water to "walk" between the glasses using nothing but a paper towel? Try this activity to find out! Read more
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