These websites are worth a look:
In Monday’s plans the Grid Method for working out multiplications is introduced. This is a useful method to solve multiplications. It clearly shows what is happening when you multiply two numbers (one being a 2/3-digit number) together. The grid method is also known as the box method.
Multiplication using the grid method and repeated addition (BBC Bitesize)
Multiplication using the area model/grid method (BBC Bitesize daily lesson)
Angles (Maths is Fun)
Types of triangles (Maths is Fun)
What are the types of triangles? (BBC Bitesize)
Quadrilaterals (Maths is Fun)