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Showing results 41 to 60 of 65
A Simply Fruity DNA Extraction
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In this activity, learners extract DNA from a strawberry and discover that DNA is in the food they eat.
Motorized Balancing Toy
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In this activity, learners build a toy that flies in circles. This activity introduces learners to center of mass, torque, and rotational motion.
The Self-Watering Terrarium
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In this biology/ecology activity, learners construct a terrarium out of a tennis ball container. This terrarium is unique because it never has to be watered.
Stroboscope
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In this activity (posted on March 20, 2011), learners follow the steps to construct a stroboscope, a device that exploits the persistence of vision to make moving objects appear slow or stationary.
Electromagnetic Dancer: Connect Her Up and Watch Her Dance!
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In this activity, learners use a nail and magnet wire to build an electromagnet, which controls the movements of a paper dancer.
Airboat
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In this activity related to Newton's Laws of Motion, learners build a boat powered by a propeller in the air.
Digger
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In this activity, learners build their own construction cranes using tongue depressors and pushpins.
Balloon Car
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In this activity, learners explore force and motion by constructing cardboard cars that are propelled by balloons.
Slide Whistle
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In this activity, learners build a slide whistle using PVC pipe, bamboo skewer, and piece of foam. Construction of the instrument is relatively simple.
Finger Basketball
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In this activity, learners build mini-basketball courts using cardboard and measuring spoons. Use this activity to introduce learners to catapults, forces, and levers.
Weather Vane
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In this meteorology activity, learners build weather vanes using straws, paperclips, and cardstock.
Torsion Drum
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In this activity, learners build a musical drum using a cardboard tube, plastic wrap, and beads.
Hydraulic Car
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In this activity, learners build cars using syringes and water-powered hydraulics. Learners construct the car frame out of cardboard and set up a hydraulic system to raise and lower the car.
Propeller-Powered Car
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In this activity, learners construct cars that are powered by hand-made, electric propellers.
Cable Car
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In this activity, learners string a line across the room and build cable cars that can move from on end to the other.
Bouncing Yo-Yo
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In this activity, learners build unique yo-yos, which spin round and round without moving up and down.
Hovercraft
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In this activity, learners build a hovercraft using a paper plate, cup, and simple motor.
Bookshelf
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In this activity, learners use simple tools to build a bookshelf with a built-in bookend.
Magnet Tower
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In this activity, learners build magnetic towers to explore the forces and properties of magnets.
Electromagnet
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In this activity, learners build an electromagnet using a nail, a cork, a battery, and electrical wire. Use this activity to demonstrate how electric currents produce magnet fields.