# Mass - THINKING PATHWAYS MASS Stage 3 Alice Vigor s 2017 Teaching and Learning Sessions L.I: We are learning to use decimal notation to record mass and convert between units. Session One How much does that fruit weigh? Session Two How many kids to the elephant?

Outcomes: Describes and represents mathematical situations in a variety of ways using mathematical terminology and some conventions MA3-1WM Selects and applies appropriate problem-solving strategies, including the use of digital technologies, in undertaking investigations MA3-2WM Vigors ce Selects and uses the appropriate unit and device to measure the masses of objects, and converts between units of mass MA3-12MG Ali 2017 SESSION ONE How much does that fruit weigh? Alice Vigors 2017 L.I. We are learning to use decimal notation to record mass and convert between units. What do you know about these units? Which one is heavier? Explain. Kilogram Gram Tonne

Alice Vigors 2017 Activating Prior Knowledge L.I. We are learning to use decimal notation to record mass and convert between units. What is a conversion chart? Why might it be useful? ____ grams = _ kilogram ____ kilograms = _ tonne Activating

Prior Knowledge Alice Vigors 2017 L.I. We are learning to use decimal notation to record mass and convert between units. Assessment Item MA3-12MG Small Group Investigation Which In fruit feels the heaviest? grams, how much does each fruit weigh? (use the kitchen scales) Can you convert these measurements into kilograms using decimal notation? How many pieces of each type of fruit would we need to make 1 kilogram?

(closest without going over) What would (x) number of choose fruit and (x) number of choose fruit weigh in g/kg/ t? I need to bring fruit to the school fruit-a-thon. I have worked out I will need 1 tonne of a variety of fruit to cater for everyone. What quantities of each of these types of fruit could I purchase to make up 1 tonne? Challenge: How much would this cost? What kinds of things could I make or use the fruit for? Alice Vigors 2017 Building Explanations & Reasoning with

Evidence L.I. We are learning to use decimal notation to record mass and convert between units. Extension Question I: A Load of Insects It has been estimated that the mass of insects caught by spiders in a year in Australia is equal to the mass of the human population of Australia. Assuming this population is around 24 million and the average mass of a human is 70 kg, what is the mass, in tonnes, of insects caught by spiders per year in Australia? Building Explanations & Reasoning with Evidence Alice Vigors 2017 L.I. We are learning to use decimal notation to record mass and

convert between units. Exit Ticket: Choose two of these sentence starters to answer about todays lesson. Today I learnt This connected to what I already knew because This extended what I knew by One thing that still puzzles me is Alice Vigors 2017 Reflecting on Learning

SESSION TWO How many kids to the elephant? Alice Vigors 2017 L.I. We are learning to use decimal notation to record mass and convert between units. What do we know about the conversion chart? ____ grams = _ kilogram ____ kilograms = _ tonne Activating

Prior Knowledge Alice Vigors 2017 L.I. We are learning to use decimal notation to record mass and convert between units. Assessment Item MA3-12MG Convert these units of mass. 356g = ____kg 724g = ____kg 105g = ____kg 594kg = ____t 234kg = ____t 798kg = ____t

25kg = ____g 1kg = ____g 145kg = ____g 1t = ____kg 89t = ____kg 2t = ____g 2.5kg = ____g 2.5kg = ____t 8 t = ____kg 8 t = ____g 63.75kg = ____g 197.5g = ____t

Making Connection s Alice Vigors 2017 L.I. We are learning to use decimal notation to record mass and convert between units. Assessment Item MA3-12MG Small Group Investigation: How many kids to the elephant? Find the mass of the average student in the class. How to calculate an average score: Add the number of scores you have. Divide the total of the scores by the number of scores to calculate the average score. Example: Data set: 100, 90, 100, 85, 95 and 80 Total of scores: 550 Average score: 550 6 = 91.667 Estimate

tonne) Calculate how many students would have the same mass as an elephant (average 4 how many students would have the same mass as an elephant. Building Explanations & Reasoning with Evidence Alice Vigors 2017 L.I. We are learning to use decimal notation to record mass and convert between units. Extension Question II: Money Measure You have ten identical open-topped boxes with 10 visually identical coins in each. In nine of the boxes each of the 10 coins has a mass of 10g. In one box the 10 coins have masses of only 9g each.

How can you find which box is the odd one out? You have a normal mass measurer with a single pan and a scale. With just one weighing can you identify the box with the lighter coins. Building Explanations & Reasoning with Evidence Alice Vigors 2017 L.I. We are learning to use decimal notation to record mass and convert between units. Exit Ticket: Choose two of these sentence starters to answer about todays lesson. Today I learnt This connected to what I already knew because

This extended what I knew by One thing that still puzzles me is Alice Vigors 2017 Reflecting on Learning