Colour in the Square
Can you put the 25 coloured tiles into the 5 × 5 square so that no column, no row and no diagonal line have tiles of the same colour in them?
Can you put the 25 coloured tiles into the 5 × 5 square so that no column, no row and no diagonal line have tiles of the same colour in them?
Here you will find links to recordings of all the NRICH Live webinars for teachers.
The flow chart requires two numbers, M and N. Select several values for M and try to establish what the flow chart does.
In this game, you throw a dice and move counters along the snail's body and in a spiral around the snail's shell. It is about understanding tens and ones.
Try grouping the dominoes in the ways described. Are there any left over each time? Can you explain why?
The red ring is inside the blue ring in this picture. Can you rearrange the rings in different ways? Perhaps you can overlap them or put one outside another?
Use the two sets of data to find out how many children there are in Classes 5, 6 and 7.
Different combinations of the weights available allow you to make different totals. Which totals can you make?