Using the appolino® arithmetic box, pupils can set their own tasks and create individual solution routes. Irrespective of whether 7 + 9 = ? , 473 – 199 = ?, 7 x 9 = ? or 144 : 12 = ? is involved, a number of strategy options will provide the correct answer. The idea is to imaginatively use blocks, number rows, points fields or place-value boards. The appolino arithmetic box is not a simple pocket calculator, but rather an interactive computation machine.