How Many?
Have a look at these photos of different fruit. How many do you see? How did you count?
Have a look at these photos of different fruit. How many do you see? How did you count?
The sum of 9 consecutive positive whole numbers is 2007. What is the largest of these numbers?
This article for teachers outlines different types of recording, depending on the purpose and audience.
Investigate the totals you get when adding numbers in threes on the diagonal of this pattern.
We can make 'wire cages' by using rods as the edges of cuboids. Can you work out what the volume of each wire cage will be? How many rods will you use?
This task offers opportunities to subtract fractions using A4 paper.
Rectangle PQRS has X and Y on the edges. Triangles PQY, YRX and XSP have equal areas. Prove X and Y divide the sides of PQRS in the golden ratio.
Make a chair and table out of interlocking cubes, making sure that the chair fits under the table!
Try grouping the dominoes in the ways described. Are there any left over each time? Can you explain why?