Role Play: At the Shops - An Interactive Activity
Give each child the same amount of fake money - try 5 one dollar bills, 2 five dollar bills, and 1 ten dollar bill to start with.
Split the class into two groups; one group of shopkeepers, the other group is made up of shoppers. You can set up one giant grocery store or split the shopkeepers up further by having different shops, just as in the book. The shopkeepers should decide on the price of their goods (with your help) and label them accordingly, making some items deliberately more expensive than the amount of fake money they have in their possession.
As the shopkeepers set up shop, the shoppers can make wallets to keep their bills in. Suggest they might make different sections to keep the different denominations of bills in and note how they organize their money when they are ready to shop. If you think it may be easier to start with smaller bills, then tell the shopkeepers to leave their larger bills "at home" and just use their single dollar bills for their first shopping trip.
As shopping commences, the first grade children should learn to only pick up what they can afford in the shop and then count out the total amount in bills to the shopkeeper. The shopkeeper then needs to count the bills again to make sure there is enough and put the money in the cash register. When advancing to using the larger bills, the shopkeeper will then need to learn how to count back the right amount of change in dollar bills too. The children will need your help to begin with, but this should get easier with practice.
At the end of course, the two groups could swap around or you could continue the role play another day with the groups reversed. Repetition is a great way of reinforcing learning, rather than making it an isolated activity that is soon forgotten.
At the end of the exercise, ask the first grade students if they found counting bills difficult. Was there anything they wanted to buy, but didn't have enough money?