1 out of 3
Use your hand span to measure the distance around a tree trunk. If you ask a friend to try the same thing, how do the answers compare?
1 out of 3
Weekly Problem 47 - 2013
What is the value of the given expression?
3 out of 3
Try to solve this very difficult problem and then study our two suggested solutions. How would you use your knowledge to try to solve variants on the original problem?
2 out of 3
Use your skill and knowledge to place various scientific lengths in order of size. Can you judge the length of objects with sizes ranging from 1 Angstrom to 1 million km with no wrong attempts?
In this article for primary teachers, Ems outlines how we can encourage learners to be flexible in their approach to calculation, and why this is crucial.
2 out of 3
Anna and Becky put one purple cube and two yellow cubes into a bag to play a game. Is the game fair? Explain your answer.
2 out of 3
This task is looking at creating polygons with specific lengths. Also, there's a chance to explore symmetry.
1 out of 3
Have a look at what happens when you pull a reef knot and a granny knot tight. Which do you think is best for securing things together? Why?
