Investigate what happens to the equation of different lines when you translate them. Try to predict what will happen. Explain your findings.

Investigate what happens to the equations of different lines when you reflect them in one of the axes. Try to predict what will happen. Explain your findings.

Each of the main diagonals of this sudoku must contain the numbers 1 to 9 and each rectangle width the numbers 1 to 4.

Build gnomons that are related to the Fibonacci sequence and try to explain why this is possible.

These gnomons appear to have more than a passing connection with the Fibonacci sequence. This problem ask you to investigate some of these connections.

I took the graph y=4x+7 and performed four transformations. Can you find the order in which I could have carried out the transformations?

We asked what was the most interesting fact that you can find out about the number 2009. See the solutions that were submitted.

This is the second article in a two part series on the history of Algebra from about 2000 BCE to about 1000 CE.