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Build a color-changing light-up display with an agate slice: use it as a lamp
2 ball chains
3” w x 4
the sunflower sisters are two strong
• Kit includes sewing instruction booklet
Saltwater Fuel Cell Robot Clothing Build a color-changing light-up displayBuild a sleek, modern (and adorable!) walking robot powered by salt water and magnesium no batteries required! Discover how a metal air electrochemical cell stores and discharges electrical energy using a simple saltwater solution. Explore the science of electricity, currents, and electric potential. An innovative pump mechanism provides a steady drip of salt water onto the magnesium plates and the robot walks for up to one hour on just one drop of
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