I absolutely love this activity and so does N. Its a triangle box that comes with 4 set of triangles with different sizes and angles (eg. one set is made of 2 right angle triangles, another set is made up of 4 equaliteral triangles etc). What makes it so intriguing is that each set of triangles can be arranged to make a bigger triangle. Each set forms a triangle of the same size that fits exactly into the box. I think this is a very clever way of teaching children geometry. It also gives a good visual to the child on how a shape can be broken down into or made up by smiliar smaller shapes. I suspect N loves this because he is fasinated by how we could make a triangle by using 2 right angle triangles or 4 equaliteral triangles.
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