Logic Gate Lab
Sec 3 to Sec 4Logic Gate Lab
Drop AND, OR, NOT and XOR gates on a board, wire them up, and watch the truth table fill in live. Suits Sec 3 to Sec 4. Teaches Boolean logic, truth tables and building circuits to a gate budget.
What this teaches, and who it suits
Logic Gate Lab is a free Boolean logic workbench for Secondary 3 and Secondary 4, aligned to the logic topic in O-Level Computing 7155. Place AND, OR, NOT, NAND, NOR and XOR gates on a board, wire them together, and flip the input switches: the truth table fills in row by row as each combination is tried. Every challenge has a gate budget, so the cheapest correct circuit is the one that passes, which is how the classic exam questions are actually marked. A finished build can be shared as a link that opens the same circuit.
It is free to play, needs no account and runs in the browser on a phone, tablet or laptop. Nothing a child makes is stored on our servers: a shared link carries the work itself.