"What shape does this block look like from the side?" "It looks like a different shape from above than it did before!" When playing with blocks, children sometimes notice that the shape changes depending on the viewing angle. In elementary...

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"The left and right sides are the same shape, aren't they?" "It's like looking in a mirror!" Have you ever made such a discovery? In elementary school, students learn about "line symmetry" and "point symmetry," but the foundational understanding for...

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"I wish my child would be good at math..." Have you ever thought something like that? In fact, it is said that geometric shapes learned in elementary school math become much easier to understand if children are exposed to them...

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To help children develop a love for math, there's a more important skill than just being able to calculate. That skill is "number sense." Number sense is the ability to intuitively grasp numbers, for example: Roughly understanding the difference between...

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