Complete these two jigsaws then put one on top of the other. What
happens when you add the 'touching' numbers? What happens when you
change the position of the jigsaws?
In this challenge, you will work in a group to investigate circular
fences enclosing trees that are planted in square or triangular
You are organising a school trip and you need to write a letter to
parents to let them know about the day. Use the cards to gather all
the information you need.
These clocks have only one hand, but can you work out what time
they are showing from the information?
Which pairs of cogs let the coloured tooth touch every tooth on the
other cog? Which pairs do not let this happen? Why?
Imagine a large cube made from small red cubes being dropped into a
pot of yellow paint. How many of the small cubes will have yellow
paint on their faces?
What happens to the area and volume of 2D and 3D shapes when you
Choose a couple of the sequences. Try to picture how to make the next, and the next, and the next... Can you describe your reasoning?
We had some clear descriptions of the relationships between
functions and their graphs.
Go to last month's problems to see more solutions.
Many NRICH tasks have been designed with group work in mind. Read about Jo Boaler's research on the benefits of collaborative work and watch a clip of a teacher working in this way.
Group work depends on effective team work. This article describes
attributes of effective team work and links to "Team Building"
problems that can be used to develop learners' team working skills.
Who said that adding, subtracting, multiplying and dividing
couldn't be fun?