There are 15 construction cards included in this set and children will love the challenge of building the various items: towers, bridges, robot, car, train, rocket etc. After making the item, the student must count how many of each 3D shape they used and write the number. Then they can add the total to find out 'how many blocks they used altogether' to build their item.This would make an ideal Maths activity station/Math centre for a Kindergarten to Grade 1 class. There are varying levels of dif