Area of Sector and Length of Arc
Set your own problem by changing the angle and radius using the sliders, and ticking two of the boxes to reveal values. Using these values find the two missing values. Check your answer by revealing the answers. 

1. What size angle gives the same arc length as radius? 2. Can you make the arc length and area the same? In how many ways can this be done? Can you show this algebraically? 
Transformations of a quadratic using sliders
Set up a problem for your friend! Change the sliders and then hide them. Pass the computer to your friend Try and work out the values of a,b,c & d When you think you have one correct, check by revealing that value 

1. Summarise the effect of changing a, b, c & d 2. What happens if b becomes negative? 