Explain the difference between consecutive odd numbers
Lesson details
Learning outcome
I can explain the difference between consecutive odd numbers.
Key learning points
- Consecutive odd numbers have a difference of 2
- We can use this knowledge to solve missing number problems when 2 is the known part.
Keywords
Difference - The result of subtracting one number from another.
Odd - Any integer (not a fraction) that cannot be divided exactly by 2
Consecutive - Numbers which follow each other in order, without gaps, from smallest to largest.
Common misconception
Children may resort to counting strategies without noticing that the relationship between the minuend and the subtrahend is that there is a difference of two.
Draw out the patterns that will allow children to solve these equations without needing to using counting strategies. For example, 5 + 2 and 2 + 5 are 'odd number after'; 7 - 2 is 'odd number before' and 7 - 5 is 'difference of two'.
Teacher tip
The sequence of steps in this lesson are the same as those in that for finding the difference between consecutive numbers, but now we are exploring a difference of two rather than one.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What is the odd number before 9?
Q2.What is the missing number in the number pattern? 3 5 {} 9
Q3.Match these odd numbers with the odd number that comes before it.
3
1
5
7
Q4.Who is correct?
Q5.What is the missing number?
Q6.Jacob has 8 stickers. Sam has 2 fewer. How many stickers does Sam have?
Assessment exit quiz
6 Questions
Q1.What are the odd numbers before and after 7?
Q2.Which of these pairs of numbers are consecutive odd numbers?
Q3.Which equation is in the wrong place?
Q4.Which part part whole model matches the story so far?
There were 7 cats. 5 of them were wearing hats. How many were not wearing hats?
Q5.There were 7 children jumping on the bouncy castle. 5 children got off. How many children were left bouncing?
Q6.Sam has 5 sweets. She gave some to her sister. Sam has 3 left. How many did she give to her sister?
To help you plan your 1 maths lesson on: Explain the difference between consecutive odd numbers, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 1 maths lesson on: Explain the difference between consecutive odd 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 Addition and subtraction facts within 10 unit, dive into the full primary maths curriculum, or learn more about lesson planning.