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Have you got the Mach knack? Discover the mathematics behind exceeding the sound barrier.
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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?
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Weekly Problem 37 - 2017
A quadrilateral is divided into two isosceles triangles. Can you work out the perimeter of the quadrilateral?
This article, the first in a series, discusses mathematical-logical intelligence as described by Howard Gardner.
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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.
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A geographical survey: answer the tiny questionnaire and then analyse all the collected responses...
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Can you prove that in every tetrahedron there is a vertex where the three edges meeting at that vertex have lengths which could be the sides of a triangle?
