Working in teams, communication, presenting their ideas to the buyers. Maths when buying materials and working out % profit.
While working in teams the students design a saleable product buy materials from the challenge shop and make multiple items that are then sold to the buyers for a profit. The profit is then used to purchase more materials, more products are made and sold. Teams make decisions about broadening their product range and how to increase their profit. The winning team will have made the maximum profit.