Squares

Can you dissect a square into: 4, 7, 10, 13... other squares? 6, 9, 12, 15... other squares? 8, 11, 14... other squares?

ABCD is a regular tetrahedron and the points P, Q, R and S are the midpoints of the edges AB, BD, CD and CA. Prove that PQRS is a square.

Can you work out the area of the inner square and give an explanation of how you did it?

What is the minimum number of squares a 13 by 13 square can be dissected into?

What is the total number of squares that can be made on a 5 by 5 geoboard?

With one cut a piece of card 16 cm by 9 cm can be made into two pieces which can be rearranged to form a square 12 cm by 12 cm. Explain how this can be done.

Cut off three right angled isosceles triangles to produce a pentagon. With two lines, cut the pentagon into three parts which can be rearranged into another square.

If you continue the pattern, can you predict what each of the following areas will be? Try to explain your prediction.

A square of area 3 square units cannot be drawn on a 2D grid so that each of its vertices have integer coordinates, but can it be drawn on a 3D grid? Investigate squares that can be drawn.

What do you think is the same about these two Logic Blocks? What others do you think go with them in the set?