Terry and Ali are playing a game with three balls. Is it fair that Terry wins when the middle ball is red?
In the multiplication table on the right, only some of the numbers have been given. What is the value of A+B+C+D+E?
Weekly Problem 37 - 2017
A quadrilateral is divided into two isosceles triangles. Can you work out the perimeter of the quadrilateral?
Have you got the Mach knack? Discover the mathematics behind exceeding the sound barrier.
Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?
Each light in this interactivity turns on according to a rule. What happens when you enter different numbers? Can you work out the rule for each light?
There are six numbers written in five different scripts. Can you sort out which is which?
What does this number mean? Which order of 1, 2, 3 and 4 makes the highest value? Which makes the lowest?
This article, the first in a series, discusses mathematical-logical intelligence as described by Howard Gardner.
Here we make the model more realistic, by exploring the effect of movement by a population on the spread of an infectious disease. There's an interactivity that allows you to party, commute, and visit friends.
