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In this electrochemistry activity, young learners and adult helpers create a battery from a potato to run a clock.

What's a Pickle-Oh? Two pieces of pickle on a stick are connected to a Pico Cricket (micro controller). When you slide the pickles apart the note changes.

Cool off in the heat with this project! Learners use simple materials to build a fan that runs on a motor.

In this activity (26th on the page), learners construct an easy-to-build device and test motor learning.