A potato battery is an electrochemical battery, or an electrochemical cell in which a chemical reaction occurs in a liquid between two different metals. When a wire is placed to connect the metals, it carries an electrical current. An electrochemical cell converts chemical energy to electric energy. This plastic clock has two compartments designed to hold potatoes or fruit. Two coils (one red and one blue) are inserted into a different potato while the green coiled wire is connected to both potatoes. This will then make the clock start working. This is an excellent demonstration clock to use in the science classroom!
This all-plastic intermediate-level yo-yo is great for the seasoned yo-yo user!
Build a tumbling robot that gets up right after it has fallen down, without any outside help!
Command robotic creations with this cool construction kit!
Cool new Pi tee featuring ultra soft and light blue 100% cotton shirt.
Ever wonder how to survive in the wilderness? These cards can help!
Teach your students about green energy sources in a creative way with this fun kit!