We meet two children who set up a 'Kinderkiosk' in the local playground to earn some money. They plan the prices and set up the stall, then sell the items to other children. We hear frequent use of numbers, backed up with on-screen graphics, and hear words for snacks which are often the same as the English. Commentary in German and English.
Ask the children to write their own price list for sweets or other products. What would they like to sell? Work in pairs: one is selling, the other one is buying. Take the activity further by introducing haggle-phrases: 'Das ist viel zu teuer', 'ich habe nur ... Euro', etc.
Practise higher numbers by giving the pupils some calculations to do - say the numbers in German without writing them down.
'Trade your way to Germany': could be sparking a discussion about what the students might want to sell in Germany - do they know the vocabulary for the items?