The only equipment you really need to teach a forward roll is a soft surface. Forward rolls can be taught on soft grass, sand, practically anything with a bit of give in it. However, a scatter mat, a 30cm high soft box, and a 30cm high wedge are really useful. A wedge is helpful as the slope assists the children to rotate, and gives them additional speed to help them stand up; however the angle also increases the falling sensation, so it can increase the fear factor for first timers...