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AERO Ochre Maths Year 3 Unit 2 - Exploring calculation strategies

This sequence of 15 lessons will teach students various calculation strategies.

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Balance

This activity invites students to explore the phenomena of balance and investigate the question, 'Can you find at least three different ways of balancing three identical weights on a balance board?' Students work with a simple balance (e.g., a ruler as the balance board, a toilet-paper-tube fulcrum, and coins as weights), ...

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Flying high

Students partition four-digit numbers into place-value parts.

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Cutting it up

Students represent fractions using linear materials and recognise key equivalent fractions. They share collections equally to solve simple problems (halves, quarters and eighths).

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Hundreds and thousands

Students compare and order three-digit numbers using number lines.

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Fill it up

Students establish a mental image of one litre and measure the capacity of everyday containers using litres.

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Bright budgeting

Students make calculations with amounts of money and make financial decisions.

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Leaf task

Use this diagnostic task to assess understanding of area and measuring the area of an irregular shape.

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Even and Odd Numbers - Calculate

In this activity let’s look at what happens when we add, subtract and multiply pairs of even numbers, pairs of odd numbers, or even a mix of even and odd numbers!

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Grid Games - Calculate

This game, played in on a grid on the classroom floor, challenges students to develop directional language and use coordinates to locate places on a grid. The instructions include multiple variations on the game which focus on different aspects of location and direction concepts.

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Coin Toss - Calculate

The focus of this activity is for students to conduct an experiment that involves chance.They will use the information they gather to represent their findings.

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Estimation and reasonableness: Year 3 – planning tool

This planning resource for Year 3 is for the topic of Estimation and reasonableness. Students incorporate estimation strategies and use estimation to determine the reasonableness of calculations and detect errors when solving problems. They apply relevant strategies to estimate quantities.

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Multiplication and division: Year 3 – planning tool

This planning resource for Year 3 is for the topic of Multiplication and division. Students further develop multiplication and division concepts. They multiply and divide one- and two-digit numbers. Students represent problems using number sentences, diagrams and arrays, and use a variety of calculation strategies.

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Odd and even: Year 4 – planning tool

This planning resource for Year 4 is for the topic of Odd and even. Students investigate the properties of odd and even numbers. They learn to identify and explain patterns that emerge when odd and even numbers are used in computation problems.

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Fruit fractions: Fruit karate

In this lesson, students use fruit to explore common fractions. They step into the world of fractions by exploring various fruits and slicing them into halves, quarters and eighths. Through materials such as playdough and interactive discussions, they discover the meaning of terms such as numerator and denominator while ...

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Mathematical modelling: Year 4 – planning tool

This planning resource for Year 4 is for the topic of Mathematical modelling. Students use mathematical modelling to solve practical problems involving additive and multiplicative situations including financial contexts. They formulate problems using number sentences and choose efficient calculation strategies.

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Come in spinner

Students recognise and describe variations in results and conduct a simple experiment with spinners.

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School challenge

Students represent four-digit numbers to 2,000 using materials. They read, write and compare three-digit and four-digit numbers.

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Line of symmetry

Students identify and draw the lines of symmetry by folding 2D shapes.

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Act it out

Students revise and extend the recall of 10x. They describe and continue patterns created from multiplication, and solve multiplication and division problems.