Are these statements always true, sometimes true or never true?
These Olympic quantities have been jumbled up! Can you put them back together again?
Explore the effect of combining enlargements.
How can we make sense of national and global statistics involving very large numbers?
Here are some examples of children's thinking about the NRICH task Four Triangles.
Weekly problem 46 - 2006
What is the first term of a Fibonacci sequence whose second term is 4 and fifth term is 22?
How many triples of points are there in this 4×4 array that lie on a straight line?
A 3×8 rectangle is cut into two pieces... then rearranged to form a right-angled triangle. What is the perimeter of the triangle formed?
