Partition means to split up a whole into parts.

A part-part-whole model is a pictorial representation that shows the whole and its parts.

Any way two or more parts can be put together.

Having an order to the way we work, identifying and using patterns.

A way of showing information (such as numbers and descriptions), arranged in rows and columns.

Partition the numbers one to five in a systematic way

Maths

Explain that numbers can represent how many objects there are in a set

Ordinal numbers show the position of an object in relation to another

Partition numbers one to five in different ways

Find a missing part when one part and the whole is known

Solve problems finding a missing part when one part and the whole is known

Show one more and one less than a number using representations

Show one more and one less than a number using representations and describe this accurately

Use a bar model to represent a whole partitioned into two parts

Solve problems using a bar model to represent a whole partitioned into two parts

In this unit pupils will revisit how numbers are represented cardinally and ordinally. They will partition 1 - 5 in different ways and find a missing part. In the future unit pupils will represent numbers 6 - 10 by partitioning in different ways. They will learn what odd and even numbers are and how they can be partitioned. They will identify a missing part when a whole is partitioned into 2 parts

In prior learning, pupils will have explored the composition of numbers to 10 and be able to subitise up to 5. In this unit pupils will partition 1 to 5 in different ways and find a missing part.

In this unit pupils will revisit how numbers are represented cardinally and ordinally. They will partition 1 - 5 in different ways, find a missing part when one part and the whole are known and explore one more and one less with numbers to five.

Composition of numbers 0 to 5

Look at the wholes in these pictures. Which is the odd one out?

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

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

Which part-part-whole model matches the top row of the table?

Which picture would come next if working in a systematic order?

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

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

Partition the numbers one to five in a systematic way

Lesson outcome