Year 1 Term 2 Week 6 Mathematician Centre Prompt: Create a mini supermarket and go shopping. Introduction ● Explain to the students that you have noticed that some students were having difficulty with adding and subtracting money when making purchases at the supermarket last week. Therefore, todays lesson focus is to represent money values in multiple ways and calculate change from $20. ● Discuss the importance of being able to add and subtract money when going shopping. Make sure that students understand that an amount of money can be represented in a variety of ways. ● Watch the video and have student’s workout how to add the total amount of notes. https://www.youtube.com/watch?v=nvi1_DK7hJw start video at 4:36 for Australian Dollars ● Display the $1, $2, $5, $10, $20, $50 and $100 dollar notes on the board. Have students revise/identify the different notes displayed and discuss their value. ● Point out that it is both the responsibility of the customer and the cashier to add up the items bought. As well as working out the correct amount of change that needs to be given out.
● Choose 4 students to stand out the front of the class and give them each a plastic slip (wallet) with different amounts in it, ranging from $1 to $50. Point out to the students that when we are counting all our money we are using ‘addition’. The customer will also need to count the change given to make sure that they were given the right amount. They will be using the operation of ‘subtraction’. ● Choose four different students to stand at the front. Explain to the students that they are going to be given $20 each to spend at the supermarket. Inform them that they can choose any items they would like from the supermarket, but the total amount must not exceed $20. Provide ten frames and unifix blocks to assist students with adding and subtracting their total amounts spent and how much change is required. ● Provide whiteboards or paper for students to record the items that were purchased and how much they cost.As well as how they worked out how much change needed to be given from$20. ● TPS – Why do you think it was easier to add and subtraction money using the ten frames or unifix cubes? Students explain their thinking. ● Encourage students to use the tens frames or unifix blocks to assist them with adding and subtracting how much they spent at the shops. Reflection- Students share their findings with year 1.
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