New
New
Year 2

Identify and explain when objects cannot be grouped equally

I understand that objects cannot always be grouped equally.

New
New
Year 2

Identify and explain when objects cannot be grouped equally

I understand that objects cannot always be grouped equally.

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Lesson details

Key learning points

  1. Sometimes a number can be made into groups of equal size and sometimes the groups are unequal sizes.
  2. There are ___ groups of ___ and ___ are not in a group of ___
  3. When the number of objects is not a multiple of the group size, you cannot make equal groups.

Keywords

  • Group - A group is a collection of objects or images.

  • Unequal - Unequal means not to have exactly the same amount or value.

Common misconception

Pupils may struggle to understand why equal groups can / cannot be made.

This is a challenging concept for Y2 children without visual representations. Take time to explore how even numbers can be grouped in equal groups of 2, whereas odd numbers cannot be and how multiples of 5 can be grouped into equal groups of five.

In the first cycle of the lesson, focus children's attention on whether equal-sized groups can be made or whether the groups are of unequal size. In the second cycle, discuss the number and size of groups and whether there are any children/objects not in an equal-sized group.
Teacher tip

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Lesson video

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6 Questions

Q1.
Look at the counters. How many counters are there in each group? counters
An image in a quiz
Correct Answer: 3
Q2.
Look at the bar model. How many groups of 2 does it represent? groups
An image in a quiz
Correct Answer: 4
Q3.
Look at the equation. Match each number with what it tells us.
An image in a quiz
Correct Answer:15,whole

whole

Correct Answer:3,number of groups

number of groups

Correct Answer:5,size of each group

size of each group

Q4.
12 is equal to ___
Correct answer: 6 × 2
Correct answer: 12 × 1
1 × 6
2 x 5
Q5.
10 is equal to groups of 5
Correct Answer: 2
Q6.
14 is equal to groups of 7
Correct Answer: 2

6 Questions

Q1.
4 children get into pairs. Are the groups equal or unequal?
An image in a quiz
Correct answer: equal
unequal
Q2.
6 children get into groups with 3 children in each group. Are the groups equal or unequal?
An image in a quiz
Correct answer: equal
unequal
Q3.
There are 8 children. Which equal-sized groups could they get into without any children being left out?
An image in a quiz
Correct answer: groups of 2
groups of 3
Correct answer: groups of 4
groups of 5
Q4.
There are 7 children. They get into pairs. How many children are not in a pair?
An image in a quiz
Correct Answer: 1
Q5.
There are 9 children. They get into groups with 4 children in each group. How many children are not in a group of 4?
An image in a quiz
Correct Answer: 1
Q6.
There are children. They get into 2 groups with 5 children in each group. 1 child is not in one of these groups. How many children are there altogether?
Correct Answer: 11