Tap a piece to pick it up, then tap the outline of the same shape to place it. Match each piece to the outline with the same shape. Tap a placed piece to move it again. When you're done, press Check. Reset returns every piece to the tray.
3D math game · Best for grades 2-5
Tangram gives students a set of classic geometric pieces — triangles, a square, and a parallelogram — and a silhouette outline to fill. Each piece must be matched to its correct slot, building shape-recognition, part-whole reasoning, and spatial fitting skills across grades 2-5.
Matching geometric pieces to an outline develops shape recognition (triangles of different sizes, parallelogram orientation) and spatial decomposition — the ability to see a complex shape as a sum of simpler parts, a foundation for area and fractions of shapes.
The large silhouette of a running figure contains two large triangles, one medium triangle, two small triangles, a square, and a parallelogram. Identifying the parallelogram's outline slot before placing the square prevents the most common placement error.
Students often try to force a triangle into a slot that is the right triangle shape but the wrong size, because they focus on shape type rather than shape size. Colour-coded pieces help, but size-checking — 'is this piece big enough?' — must become the first question.
Use it for individual practice, paired work, or a short class demonstration before worksheets.
Start with the game above, then continue with written practice to reinforce the skill.