This is part of our Secondary Curriculum collection of favourite rich tasks arranged by topic.
Scroll down to see the complete collection, or explore our subcollections on Perimeter and Area in two dimensions, and Surface Area and Volume in three dimensions.

problem
Reflecting squarely
In how many ways can you fit all three pieces together to make shapes with line symmetry?

problem
Shady symmetry
How many different symmetrical shapes can you make by shading triangles or squares?


problem
Growing rectangles
What happens to the area and volume of 2D and 3D shapes when you
enlarge them?

problem
Attractive rotations
Here is a chance to create some attractive images by rotating shapes through multiples of 90 degrees, or 30 degrees, or 72 degrees or...





Image

You may also be interested in this collection of activities from the STEM Learning website, that complement the NRICH activities above.