In sheep talk the only letters used are B and A. A sequence of words is formed by following certain rules. What do you notice when you count the letters in each word?

How many different journeys could you make if you were going to visit four stations in this network? How about if there were five stations? Can you predict the number of journeys for seven stations?

Investigate the different ways you could split up these rooms so that you have double the number.

Liam's house has a staircase with 12 steps. He can go down the steps one at a time or two at time. In how many different ways can Liam go down the 12 steps?

Can you beat the computer in the challenging strategy game?

Leonardo who?! Well, Leonardo is better known as Fibonacci and this article will tell you some of fascinating things about his famous sequence.

Cellular is an animation that helps you make geometric sequences composed of square cells.

A first trail through the mysterious world of the Golden Section.

The well known Fibonacci sequence is 1 ,1, 2, 3, 5, 8, 13, 21.... How many Fibonacci sequences can you find containing the number 196 as one of the terms?

Draw whirling squares and see how Fibonacci sequences and golden rectangles are connected.

Play around with the Fibonacci sequence and discover some surprising results!

Second of two articles about Fibonacci, written for students.

Here are some circle bugs to try to replicate with some elegant programming, plus some sequences generated elegantly in LOGO.

This part introduces the use of Logo for number work. Learn how to use Logo to generate sequences of numbers.