The teacher of Year 5 in Bute House Prep School sent in the following:
The Year 5 girls worked in groups to investigate how many arrangements they could find. They considered the different ways they could classify the shapes they made and whether or not they could prove they had them all. The attached document is the conclusions Maya, Kyra and Amelie came to.
You can see more of their work here. What do you make of the key they've created using different symbols to sort particular groups of shapes?
Thank you for these good ideas of working with the triangles. I wonder what happens if you add one more triangle?
The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the
NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to
embed rich mathematical tasks into everyday classroom practice.