There are two key intended learning outcomes for this unit. Students will become familiar with NZ currency and students will be able to identify and compare the values of different units of currency. Students will recognise note and coin values, and know the number of 10c in amounts that are multiples of 10.
- Recognise NZ notes and coins.
- Compare values of NZ coins.
- Skip count in 10s.
- Use coins to make totals.
Operating with money allows for practise in addition (with or without materials as required) as well as development of skip counting in 5s and 10s.
- Introduce the topic of money – possibly read a story featuring money or shopping.
- Brainstorm – what do you know about money?
What types of money are there? (accept different currencies, credit cards, cheques etc, as well as different denominations of coins and notes).
- Get students to describe the different coins/notes –
What colour is...?
What is there a picture of on...?
- If possible show some real examples – possibly not of the $50 and $100 notes though!
- Give each student a copy of New Zealand Money handout.
- Students can colour notes and coins appropriate colours – if you can print a copy in colour for them to refer to it would be helpful or project images of notes onto the whiteboard from the internet.
- Practise with small denominations of coins to help students develop their skip counting. To answer these questions easily, students will need to be able to skip count in 10s. Support students with the 100s board if needed, by putting a 10 cent coin at the end of each row of 10 until they get to 100.
How many 10 cent coins make 20 cents?
How many 10 cent coins make 50 cents?
How many 10 cent coins make a dollar? (Students need also to understand that there are 100 cents in a dollar.)
How many 20 cent coins make a dollar?
How many 50 cent coins make a dollar?
- One of the first things students need to understand about money is the relative values of the coins. This can be emphasised through a series of questions about ‘how many?’ It is best if students can use materials to support them if possible – either real coins, play money, or photocopied and cut out coins (Coins copymaster).
How many ways can you make 50 cents?
I have three coins that total 40 cents – what are they?
I have 5 coins that make a dollar – what could they be?
These ideas can be reinforced by using a shop scenario. Allocate prices to a collection of items and let students make combinations of coins to total the same amount as the prices.
- Once students have had practise making totals with coins of one denomination, they should move on to combining denominations. Start with an easy question like how many ways can I have coins that add up to 20 cents? (2 ways – 1x20c or 2x10c).
What coin could you use to buy a post card that costs 40 cents?
What coin could you use to buy a pencil that costs 70 cents?
What coin could you use to buy an ice cream that costs $1.50
This is a topic in maths that students at this level will have had a varying range of experience in. Because of this you will probably want to divide your class into smaller ability groups for this unit.
- Another important money idea is understanding that when we are buying items, we have to give at least enough money. More often than not in actual fact we give more money than is required and receive change. Ask a series of questions about what one coin could be used to buy items of various prices. At Level 1 most students will probably not be able to work out correct change for this type of question but more able students may be extended in this area.
- Practise skip counting in tens by making up totals by cutting out paper coins and pasting them on paper to make 40c, 50c, etc
- Make combinations of coins that total to 50c, $1 or $2. Cut out paper coins and paste on paper to show their work.
- Play shops with other students
- Play detective and use a magnifying glass to examine a collection of real coins stored in a cloth bag or change purse. Draw or describe what they see.
- For interest's sake, show collections of foreign coins or invite a coin collector to visit the class and discuss his/her hobby.
- Do rubbings of various coins using coloured chalk or crayons. These can also be enlarged on the photocopier for an interesting display.
Make a class display by having students cut and paste coins onto a piece of paper and then write a sentence under them. You could ask students to make coins total a given amount (alter the amount according to individual students’ ability) and then write a sentence in the form "Five 20 cent pieces and two 10 cent pieces makes One dollar and 20 cents."