Maths Unit 26 - Equal means Equivalent

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Unit 26

Stage 1 Year B

Equal means equivalent

Lesson 1

Lesson 2

Lesson 3

Lesson 4

Lesson 5

Lesson 6

Lesson 7

Lesson 8

Students are learning that:

1. the equals sign is used to indicate equivalence and to show that 2 or more amounts have the same value

2. equivalence can be checked using an equal-arm balance.

Students can:

1. correctly use the equals sign to show equivalence

2. place objects on either side of an equal-arm balance to obtain a level balance and check equivalence

3. record equivalence using concrete materials, correct vocabulary, drawings and diagrams.

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https://sites.google.com/education.nsw.gov.au/math-manipulative/arm-balance

https://freeonlinedice.com/

https://toytheater.com/addition-scale/

http://www.topmarks.co.uk/Flash.aspx?f=CalcBalancev5

Students are learning that:

1. the amount which is taken away from a collection can change the equivalence

2. equivalence can be checked using an equal-arm balance.

Students can:

1. subtract and record number sentences to 20

2. place objects on either side of an equal-arm balance to obtain a level balance and check equivalence.

https://toytheater.com/dice/

https://sites.google.com/education.nsw.gov.au/math-manipulative/arm-balance

https://sites.google.com/education.nsw.gov.au/math-manipulative/arm-balance

5 + 5 = 10 − 4

Students are learning that:

1. combinations of numerals and objects may look different but are still equivalent

2. whatever is added or taken away from one set must be added or taken away from the other set.

Students can:

1. use number bonds and combinations of objects to solve equality problems

2. record equivalence using concrete materials, correct vocabulary, drawings, and diagrams.

Students are learning that:

1. the counting sequence continues with three-digit numbers

2. addition and subtraction can be used to check equivalence

3. using different structured materials and strategies helps to solve addition and subtraction problems.

Students can:

1. identify and record three-digit numbers in a sequence

2. apply addition and subtraction to number sentences to check if they are equal

3. represent, record, and solve addition and subtraction problems using structured materials and strategies like number bonds or counting on and back.

https://toytheater.com/dice/

Students are learning that:

1. addition and subtraction are inverse operations

2. number combinations can have related addition and subtraction number facts.

Students can:

1. model how addition and subtraction are inverse operations using number sentences

2. recall and use related addition and subtraction number facts to at least 20

3. understand that the equals sign represents equivalence.

https://toytheater.com/dice/

2, 4 and 6

4 + 2 = 6

2 + 4 = 6

6 – 4 = 2

6 – 2 = 4

6 = 4 + 2

6 = 2 + 4

2 = 6 - 4

4 = 6 - 2

https://toytheater.com/dice/

Students are learning that:

1. number bonds can help to find a missing number in a number sentence

2. an empty number line can be used to represent and solve addition and subtraction problems.

Students can:

1. use known number bonds and knowledge of equality to solve missing number problems

2. use an empty number line to solve addition and subtraction problems.

https://www.online-stopwatch.com/random-number-generators/simple-number-generator/

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https://toytheater.com/missing-addend/

https://www.roomrecess.com/games/AlienAddends/play.html

Students are learning that:

1. relational thinking is an efficient strategy to solve addition and subtraction problems.

Students can:

1. record and solve missing equality number problems using relational thinking

2. use the forwards and backwards counting sequence to solve related problems.

https://www.iknowit.com/lessons/b-missing-numbers-to-20-addition-subtraction.html

https://www.iknowit.com/lessons/b-missing-numbers-to-100-subtraction.html

https://www.iknowit.com/lessons/b-missing-numbers-to-100-addition.html

https://www.topmarks.co.uk/number-facts/number-fact-families

Students are learning that:

1. different strategies can be applied to efficiently solve addition and subtraction problems

2. a variety of number sentences can reflect equality.

Students can:

1. model how addition and subtraction are inverse operations using concrete materials, drawings, and diagrams

2. use known number bonds and knowledge of equality to solve missing number problems

3. record and solve missing equality number problems using relational thinking.

https://www.mathgames.com/skill/2.113-balance-addition-equations-with-sums-up-to-20

https://www.mathgames.com/skill/2.57-balance-addition-equations-with-operands-up-to-100

https://www.mathgames.com/skill/2.70-balance-addition-equations-with-sums-up-to-1000