I have taught Pythagoras many times and made this worksheet and it works brilliantly. You start at the bottom working out the hypotenuse, progress onto triangles in which you work out one of the shorter sides and then move on to a variety of questions in which you need to draw in lines to create the triangle. All of the answers are provided. Works brilliantly every time.

This is a worksheet I made for my groups to practise quadratic sequences. The students like being able to check their answers as they go along as all of the answers can be found randomly scattered in the boxes on the right side of the sheet. This enables the students to self-check thereby freeing the teacher up to support students as and then they encounter problems. All of the answers are provided on the second sheet.