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Year 1

Counting patterns within a decade

I can notice the patterns in the numbers when counting up to 100

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New
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Year 1

Counting patterns within a decade

I can notice the patterns in the numbers when counting up to 100

Download all resources
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Share activities with pupils
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Lesson details

Key learning points

  1. You can use the patterns in the one hundred square to help you count to and from 100
  2. The one hundred square is split into rows and these can help you count.
  3. All the numbers in a row start in the same way except the decade number at the end.

Keywords

  • Row - A straight line of numbers, objects etc, arranged horizontally.

  • Pattern - A repeated arrangement of numbers, colours or shapes which are related to each other in some way or linked by a certain rule.

  • Decade - A set of 10 numbers, all beginning with the same number of tens, e.g. 20,21…29.

Common misconception

Confusion when counting select rows on a one hundred square, e.g. children may not use the end of the number (the ones) to help them count accurately, or may say the row ending in 40 is the 'forties'.

Label 'decades' throughout the lesson, and model errors in counting within these so that children get used to hearing when the count doesn't sound right.

Provide daily opportunities to count to 100 e.g. each morning, you could count along the one hundred square and mark to show how many children are in. Note, this lesson uses different representations to highlight counting patterns. You may choose to be selective based on the needs of your class.
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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Starter quiz

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6 Questions

Q1.
Sort these numbers in the order you would say them when counting forwards.
1 - 6
2 - 7
3 - 8
Q2.
Sort these numbers in the order you would say them when counting backwards.
1 - 9
2 - 8
3 - 7
Q3.
Sort these numbers in the order you would say them when counting forwards.
1 - 60
2 - 70
3 - 80
Q4.
Which of the following is a decade number?
6
Correct answer: 60
16
Q5.
Aisha is counting forwards in tens from 50. Which of the following numbers won't she say?
80
Correct answer: 40
70
Q6.
Lucas is counting backwards in tens from 70. Which of the following numbers won't he say?
30
Correct answer: 80
50

Exit quiz

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6 Questions

Q1.
Which row of the one hundred square does the picture show?
An image in a quiz
Correct answer: the twenties
the thirties
the forties
Q2.
Which of these rows from the one hundred square should come first when counting forwards?
An image in a quiz
the sixties
Correct answer: the fifties
the seventies
Q3.
Sort these numbers in the order you would say them when counting forwards along the row of the one hundred square.
1 - 45
2 - 46
3 - 47
Q4.
Sort these numbers in the order you would say them when counting backwards along the row of the one hundred square.
1 - 27
2 - 26
3 - 25
Q5.
Numbers can be said in different ways. Match the number to the correct way to say it.
Correct Answer:2 tens,20

20

Correct Answer:2 tens 5,25

25

Correct Answer:3 tens 6,36

36

Q6.
Lucas is counting along one of these rows from the one hundred square. As he counts, he says 4 tens 3. which number is he counting?
An image in a quiz
34
Correct answer: 43