YEAR 4. NUMERACY YEAR 4 MEASUREMENT THE 4 OPERATIONS

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1 THE 4 OPERATIONS National Curriculum Links Numeracy: (Y4) (Fractions) Recognise and write decimal equivalents to 1/4, 1/2, 3/4; Solve simple measure and money problems involving fractions and decimals to two decimal places; Recognise and show, using diagrams, families of common equivalent fractions; Solve problems involving increasingly harder fractions to calculate quantities, and fractions to divide quantities, including non-unit fractions where the answer is a whole number; Add and subtract fractions with the same denominator. (Measure) Estimate, compare and calculate different measures, including money in pounds and pence. (4 operations) Add and subtract numbers with up to 4 digits using the formal written methods of columnar addition and subtraction where appropriate. DT: (KS2) Select from and use a wider range of tools and equipment to perform practical tasks accurately. PSHEE: (KS1&2) Aware of safety issues; Develop selfesteem and self-confidence; Develop good relationships with their peers. Lesson Objectives Children will work with a partner to use the bill hook safely to chop a piece of wood. Children will calculate simple equivalent fractions, including fractions of amounts in money. Children will be able to add and subtract amounts of money. Resources Bill hook, tool glove, green-wood, paper & pencils; Wood-chopper Sheets A-C; Nature Currency sheet. Teaching Points Before using this resource, leaders should be suitably qualified and insured to teach using tools and children should be familiar with the bill hook (please see Bill Hook RA). You may wish to split this session into a number of sessions depending on your time constraints. Key Vocabulary money, cost, total, price, fraction, half, double, quarter, equivalent. Risk Assessments Generic Site RA; Bill Hook RA. Learning Outcomes LA - Children will be able to use a bill hook safely. Children can work out simple equivalent fractions and money calculations with help. MA - Children will be able to use a bill hook safely. Children can work out simple equivalent fractions and money calculations. HA - Children will be able to use a bill hook safely. Children can work out simple equivalent fractions and money calculations, explaining their methods. Preparation Set out your tool area so each pair are spaced out and have one bill hook, a safety glove, a whacker, a stable base (such as a tree stump), a piece of green-wood, and paper & pencils (for working out). Depending on your adult ratios and group size, you may wish to call the students in groups at different times rather than the whole class at once. Session Outline Pretend that the local wood-chopping firm are looking for new choppers who can work well with a partner to chop safely and work out shop prices. For this, they must try to calculate equivalent fractions and money values carefully. Give each pair a green-wood log (no longer than 30cm) and explain that their first task is to work with their partner to split the log equally with their bill hook. Once split, ask the children what fraction their log is split into (one half or 1/2). Explain that they are going to split each half into half again. Can they predict what fraction each part will be worth? (one quarter or 1/4) Once split, what different fractions can they make with their pieces? (e.g. 1/4, 1/2, 2/4, 3/4, 4/4, 2/2 etc) Explain that they must now calculate the different prices the wood-chopping firm must charge for various amounts of wood to complete the shop price list. (Scroll down for sheets A-C) Explain that their last task is to buy some wood from another pair. They must use the Nature Currency to pay for the wood, calculating the total and how much nature they need carefully. (Scroll down for Nature Currency sheet) Differentiation: HA- Use Sheet C for more difficult calculations. Can they explain their methods to help others? Choose more complex combinations of nature currency and amounts of wood to buy. LA- Use sheet A for simpler calculations. Guidance with chopping and calculating. Choose simpler combinations of nature currency when buying wood. Extension: Split the group into half to make two shops between your group. Can they decide on a price per log, work out the prices for the fraction pieces and make their own nature currency? (Scroll down for template sheets). Allow the groups time to set up their shops and buy from each other..

2 Sheet A If a whole log is worth 1, write the price labels for the following amounts of wood. 1/4

3 Sheet B If a whole log is worth 1.20, write the price labels for the following amounts of wood. 1/4

4 Sheet C If a whole log is worth 5, write the price labels for the following amounts of wood. 1/4

5 YEAR 4 NUMERACY Nature Currency Sheet stone 1p green leaf 10p YEAR 4 Can you collect some of the following natural materials and use them to buy some wood from another pair? stick 2p pine cone 5p orange/ brown leaf 20p red leaf 50p How many different amounts can you make with your Nature Currency? feather 1

6 Extension Sheet Decide what the cost is for a full log and write the price labels for the following amounts of wood. Full log 1/4

7 Nature Currency Extension Sheet Decide on some natural materials which are equivalent to each of the prices listed below. (The other group must be able to find them in your outdoor area to buy from your shop!) 1p 2p 5p 10p 20p 50p Can you take it in turns with the other group to buy some wood from each other s shops? Do you need to give them any change? 1