Area
Key Stage: 2 ★★
If the central square has an area of 1 square unit. What are the areas of the red triangles?
This problem provides a challenge when you are focusing on drawing lines and shapes accurately, or finding areas either by counting squares or calculation. The problem calls on learners' understanding of squares and right-angled triangles, and requires working systematically, as well as visualisation and reasonably accurate drawing.
This resource has comprehensive teachers' notes and resources, linked from the problem page. This includes possible approaches and key questions, as well as possible support and extensions.
The file attached is a HTML file, which, when opened, automatically redirects you to the problem on the NRICH website.
Key Stage: 2 ★★
If the central square has an area of 1 square unit. What are the areas of the red triangles?
This problem provides a challenge when you are focusing on drawing lines and shapes accurately, or finding areas either by counting squares or calculation. The problem calls on learners' understanding of squares and right-angled triangles, and requires working systematically, as well as visualisation and reasonably accurate drawing.
This resource has comprehensive teachers' notes and resources, linked from the problem page. This includes possible approaches and key questions, as well as possible support and extensions.
The file attached is a HTML file, which, when opened, automatically redirects you to the problem on the NRICH website.
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Initially a tricky little problem. Like the idea. this would develop independent thinking skills as well as reasoning and speaking and listening.
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