Make heat, logic and electrical work visible. Explore why a cold room has a warm side and what insulation actually changes.
Interactive explorationWatch real lava-lamp footage, then release a model blob. Discover why it can rise while cooling, hold it without stopping heat flow, and change the conditions until its journey stops.
Interactive explorationOpen a house wall. Swap its added layer, make it thicker, and reverse the temperatures to see why insulation helps in winter and summer.
Interactive explorationLook through a cold room and follow its refrigerant loop. Count the heat removed and the work added, then try putting both sides in the same room.
Interactive explorationFlip real input bits on a little calculator. Build a result from simple rules, and follow a carry as it crosses four columns.
Close a switch. Follow a complete path. Give current a second route and discover what changes.
Power a motor. Reverse its direction. Add a load and watch speed, current and turning force find a new balance.
Send “SMALL IDEAS!” through a network. Delay a piece, lose another, and watch what the receiver can actually use.
Take these steps at your own pace. Your place is not saved as account progress or scored.