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.

Partition numbers one to five in different ways

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 the numbers one to five in a systematic way

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

Which part-whole model represents the picture?

Which one of these part-whole models is correct?

Izzy thinks that 5 can only be partitioned into 2 parts. Is she correct?

Jacob thinks that the two parts can be swapped round. Is he right?

How many pieces of fruit are there in total?

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

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

Partition numbers one to five in different ways

Lesson outcome