Here you will find some more lower primary 'hidden gems' from NRICH, which we have selected as part of our feature to celebrate NRICH's 20th birthday.
problem
Favourite
Jig shapes
Age
5 to 11
Challenge level
Can you each work out what shape you have part of on your card? What will the rest of it look like?
problem
Favourite
Poly plug rectangles
Age
5 to 11
Challenge level
The computer has made a rectangle and will tell you the number of spots it uses in total. Can you find out where the rectangle is?
problem
Favourite
Always, sometimes or never?
Age
5 to 11
Challenge level
Are these statements relating to odd and even numbers always true, sometimes true or never true?