Slide tiles into order. Only tiles next to the empty space can move. Pick big numbers (classic 15-puzzle) or a sliced painting.
🎯 GoalSlide tiles until they're in order (1 → 15 for a 4×4, with the blank in the corner). Or assemble a sliced painting.
🎮 ControlsClick a tile next to the empty square to slide it. Use the Peek button to see the solved image briefly.
💡 TipSolve the top row + left column first, then work the smaller puzzle that's left.
What students learnSpatial problem solving and working a big problem row by row.
Try in classPlay solo on 3×3, level up to 4×4. Ask: why solve the top row first?