Triangles in a Square June 23, 2017 algebra area +1 dynamic geometry functions triangles algebra area dynamic geometry functions triangles algebra area dynamic geometry functions triangles
Which one doesn't belong? June 23, 2017 reasoning symmetry +0 wodb reasoning symmetry wodb reasoning symmetry wodb
Three Way Mix-Up June 19, 2017 nrich recording + working systematically nrich recording working systematically nrich recording working systematically
Some Old Favourites June 16, 2017 nrich recording triangles + working systematically nrich recording triangles working systematically nrich recording triangles working systematically
Is it an interesting question? June 14, 2017 conjectures nrich recording + square numbers conjectures nrich recording square numbers conjectures nrich recording square numbers