All experiments
Math · Ages 5+
Complete the Shape
Find the exact piece that fills the gap.
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What is this experiment about?
Every shape here has a piece missing, shown as a dashed gap. Look at the four options and pick the one that matches the gap's shape and size exactly.
Questions kids ask
- Why do some wrong answers look almost right?
- Some options match the shape but not the size, or match the size but not the shape — only one option matches both.
- Does rotation matter?
- In this game the pieces aren't rotated, so you just need to match the outline and the size.
- What skill does this build?
- Comparing shapes carefully by both their outline and their size is an early step toward geometry and spatial reasoning.
