Can you arrange fifteen dominoes so that all the touching domino pieces add to 6 and the ends join up? Can you make all the joins add to 7?
Weekly Problem 43 - 2017
The diagram shows a semicircle inscribed in a right angled triangle. What is the radius of the semicircle?
Weekly Problem 40 - 2013
Given three sides of a quadrilateral, what is the longest that the fourth side can be?
Explore when it is possible to construct a circle which just touches all four sides of a quadrilateral.
Ben's class were cutting up number tracks. First they cut them into twos and added up the numbers on each piece. What patterns could they see?
The average temperature of six cities is 5$^\circ$C. What is the average temperature when two cities are added?
