# Year 3 Block D – Calculating, measuring and understanding shape

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- 1 Year 3 Block D – Calculating, measuring and understanding shape
- 2 Building on previous learning
- 3 Key aspects of learning
- 4 Unit 1
- 5 Unit 2
- 6 Unit 3
- 7 Unit 1 - ICT Resources
- 8 Unit 2 - ICT Resources
- 9 Unit 3 - ICT Resources
- 10 Speaking and listening
- 11 Vocabulary
- 12 Opportunities to apply mathematics in science

## The focuses of mathematics learning within this block are:

- Understanding multiplication and division as inverse operations
- Using inverses to estimate and check calculations

- Developing written methods of calculation for all four operations
- Finding unit fractions of numbers and quantities

- Solving problems and representing information; set solutions in the context of the problem

- Using measures and scales
- Comparing angles with right angles

- Using the vocabulary of position, direction and movement

Objectives | Unit 1 | Unit 2 | Unit 3 |
---|---|---|---|

Solve one–step and two–step problems involving numbers, money or measures, including time, choosing and carrying out appropriate calculations | |||

Represent the information in a puzzle or problem using numbers, images or diagrams; use these to find a solution and present it in context, where appropriate using £.p notation or units of measure | |||

Use knowledge of number operations and corresponding inverses, including doubling and halving, to estimate and check calculations | |||

Add or subtract mentally combinations of one–digit and two–digit numbers | |||

Develop and use written methods to record, support or explain addition and subtraction of two–digit and three–digit numbers | |||

Use practical and informal written methods to multiply and divide two–digit numbers (e.g. 13 × 3, 50 ÷4); round remainders up or down, depending on the context | |||

Understand that division is the inverse of multiplication and vice versa; use this to derive and record related multiplication and division number sentences | |||

Find unit fractions of numbers and quantities (e.g. ^{1}/_{2}, ^{1}/_{3}, ^{1}/_{4} and ^{1}/_{6} of 12 litres) |
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Draw and complete shapes with reflective symmetry; draw the reflection of a shape in a mirror line along one side | |||

Read and record the vocabulary of position, direction and movement, using the four compass directions to describe movement about a grid | |||

Use a set–square to draw right angles and to identify right angles in 2–D shapes; compare angles with a right angle; recognise that a straight line is equivalent to two right angles | |||

Know the relationships between kilometres and metres, metres and centimetres, kilograms and grams, litres and millilitres; choose and use appropriate units to estimate, measure and record measurements | |||

Read, to the nearest division and half–division, scales that are numbered or partially numbered; use the information to measure and draw to a suitable degree of accuracy | |||

Read the time on a 12–hour digital clock and to the nearest 5 minutes on an analogue clock; calculate time intervals and find start or end times for a given time interval |