Can you make five differently sized squares from the tangram pieces?
Is there a best way to stack cans? What do different supermarkets do? How high can you safely stack the cans?
What is the greatest number of squares you can make by overlapping three squares?
Thank you to everyone who sent in solutions for this one. Charlotte , Natasha , Abbie , Adiva and Kristina (Moorgate CP School) Harriette, Holly and Ellie (The Mount School, York) Luke (Tattingstone School) Christina (Marlborough Primary School) Only the two very best solutions are shown below. They are best because they use all the match- sticks in the triangles and there are exactly four triangles (and only four triangles) in each. Helen, Lydia and Antonia (The Mount School York)