Explain what the difference is between consecutive numbers
Lesson details
Learning outcome
I can explain what the difference is between consecutive numbers.
Key learning points
- Consecutive numbers have a difference of 1
- Consecutive numbers are one more than the one before.
- Consecutive numbers are one less than the one after.
- Consecutive odd numbers have a difference of 2
- Consecutive even numbers have a difference of 2
Keywords
Consecutive - Numbers which follow each other in order, without gaps.
Odd - Any integer (not a fraction) that cannot be divided exactly by 2 The last digit is 1, 3, 5, 7 or 9
Even - Any integer that can be divided exactly by 2 The last digit is 0, 2, 4, 6 or 8
Difference - The result of subtracting one number from another. Way in which two or more things we are comparing are not the same.
Common misconception
Children may not recognise given subtraction calculations that involve consecutive numbers and will resort to other strategies to calculate.
Recording equations alongside concrete or pictorial representations (such as cubes or a number line) will help children to visualise the difference and become more confident in spotting equations that contain consecutive numbers.
Teacher tip
Children will be becoming more confident to talk about what they notice when given an equation to solve which will help them to choose an efficient strategy to calculate within 20 accurately and quickly. You may want to begin creating a list of those explored within the learning environment.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Which of the following numbers are odd?
Q2.Which of the following numbers are even?
Q3.Consecutive numbers are…
Q4.Which number is missing in this count?
6, 8, 10, 12, 14, ___, 18
Q5.Which of these are consecutive even numbers?
Q6.Which of these are consecutive odd numbers?
Assessment exit quiz
6 Questions
Q1.Which of these equations will have a difference of 1?
Q2.15 - 14 =
Q3.11 - = 1
Q4.The difference between 4 and 6 is
Q5.When we subtract an odd number from the odd number after, it will have a difference of
Q6.15 - 13 =
To help you plan your 2 maths lesson on: Explain what the difference is between consecutive numbers, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 2 maths lesson on: Explain what the difference is between consecutive numbers, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 1 maths lessons from the Calculating within 20 unit, dive into the full primary maths curriculum, or learn more about lesson planning.