Triangles & Quadrilaterals

Explore shapes
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What is this activity?
Sort the shapes into triangles and quadrilaterals. Count their straight sides and corners.
Let’s give it a try!
How to play
- Click the green flag to start.
- Sort the shapes into 三角形 (triangles) or 四角形 (quadrilaterals).
- Press こたえあわせ to check your sorting.
The left group, 三角形, is for triangles. The right group, 四角形, is for quadrilaterals. こたえあわせ means “Check”. The original labels and hints remain in Japanese.
For families and teachers
A triangle has three straight sides. A quadrilateral has four. Turning a shape does not change the number of its sides.
This English guide uses the original Chicodori Scratch project. Some labels remain in Japanese. You can explore and remix the project on Scratch.

