A pictorial representation that shows the whole and its parts.

Use a part-part-whole model to represent partitioning into more than two parts

Maths

Explain that items can be compared using length and height

Explain that items can be compared using weight and mass

Explain that items can be compared using capacity

Count a set of objects

Solve problems by comparing sets of objects

Use equality and inequality symbols to compare sets of objects

Use equality and inequality symbols to compare the relative size of two numbers

Explain what a whole is

Explain that a whole can be split into parts

Explain that a whole can represent a group of objects

Identify a part of a whole group

Explain what a part-part-whole model is

Use a part-part-whole model to represent a whole partitioned into two parts

Solve problems using part-part-whole models with more than two parts

In this unit pupils will explain that items can be compared using length and height, mass and volume/capacity. They will compare sets of objects using equality/inequality symbols. In the future unit pupils will combine 2 or more parts to make a whole. They will learn that addends can be represented in any order and that the = sign is used to show the whole and sum of the parts are equal.

In prior learning, pupils will have had opportunities to use manipulatives to organise counting including using everyday manipulatives, tens frames and through measures. In this unit pupils will explain that items can be compared using length, mass and capacity and use the inequality symbols.

In this unit pupils will explain that items can be compared using length and height, mass and volume/capacity. They will compare sets of objects using equality/inequality symbols. Pupils will also explore part-part-whole relationships with representations.

Comparing quantities - part part whole relationships

Jun thinks that the whole will be bigger than the parts. Is he right?

Sam thinks the whole will be 8. Is this correct?

Jun thinks the whole will be 8. Is this correct?

Sam has 3 counters, Jun has 2 counters and Alex has 1 counter. Which part-whole model is showing their counters?

Which part-whole model is showing Sam’s counters correctly partitioned?

Which part-whole model is showing Jun's counters correctly partitioned?

Use a part-part-whole model to represent partitioning into more than two parts

Lesson outcome