Watch the video to see how to sum the sequence. Can you adapt the method to sum other sequences?

The interval 0 - 1 is marked into halves, quarters, eighths ... etc. Vertical lines are drawn at these points, heights depending on positions. What happens as this process goes on indefinitely?

Can you use the given image to say something about the sum of an infinite series?

An article introducing continued fractions with some simple puzzles for the reader.

A point moves around inside a rectangle. What are the least and the greatest values of the sum of the squares of the distances from the vertices?

In this article we show that every whole number can be written as a continued fraction of the form k/(1+k/(1+k/...)).

$2\wedge 3\wedge 4$ could be $(2^3)^4$ or $2^{(3^4)}$. Does it make any difference? For both definitions, which is bigger: $r\wedge r\wedge r\wedge r\dots$ where the powers of $r$ go on for ever, or. . . .

The problem is how did Archimedes calculate the lengths of the sides of the polygons which needed him to be able to calculate square roots?

In this article we are going to look at infinite continued fractions - continued fractions that do not terminate.

Two problems about infinite processes where smaller and smaller steps are taken and you have to discover what happens in the limit.

The family of graphs of x^n + y^n =1 (for even n) includes the circle. Why do the graphs look more and more square as n increases?

This function involves absolute values. To find the slope on the slide use different equations to define the function in different parts of its domain.

Compares the size of functions f(n) for large values of n.

By inscribing a circle in a square and then a square in a circle find an approximation to pi. By using a hexagon, can you improve on the approximation?