We talked about computer simulations and how they help us understand how things work. Children created their own simulation of a shop till and learnt:
How to count and total up objects and prices for their till
How to write code which used a variable to display the cost of an item in a shop
How to make an app that simulates a shop till, using a variable to display the total cost of several items and how to program a button that will reset the variable back to "0"
Take a look at their shop tills and don't forget to press the reset button ready for the next customer!