Build a complete circuit — connect the battery, switch, and bulb to make it light up. See how current flows and how a switch controls it.

Wire a DC motor to spin a propeller and drive a car forward. Explore energy conversion, thrust, and Newton's 3rd Law.

Wire an electromagnetic bell and make it ring. See the coil pull the armature, the hammer strike the gong, and the contact break — four times a second.

Interactive periodic table — search elements and click any tile for its atomic number, symbol, mass, and category.