1 out of 3
In this question we push the pH formula to its theoretical limits.
1 out of 3
Here is a chance to play a version of the classic Countdown Game.
1 out of 3
Can you work out the equations of the trig graphs I used to make my pattern?
1 out of 3
Here are several equations from real life. Can you work out which measurements are possible from each equation?
2 out of 3
Match the descriptions of physical processes to these differential equations.
2 out of 3
Find $S_r = 1^r + 2^r + 3^r + ... + n^r$ where r is any fixed positive integer in terms of $S_1, S_2, ... S_{r-1}$.
2 out of 3
A circle is inscribed in an equilateral triangle. Smaller circles touch it and the sides of the triangle, the process continuing indefinitely. What is the sum of the areas of all the circles?
1 out of 3
This interactivity invites you to make conjectures and explore probabilities of outcomes related to two independent events.
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A jigsaw where pieces only go together if the fractions are equivalent.
2 out of 3
If the hypotenuse (base) length is 100cm and if an extra line splits the base into 36cm and 64cm parts, what were the side lengths for the original right-angled triangle?
