Finding the missing number from 0 to 20
Lesson details
Learning outcome
You can find the missing number from 0 to 20.
Key learning points
- Use knowledge of stable order principle to figure out missing numbers on a number track.
- Use knowledge of one more than and one less than to work out missing numbers in number tracks.
Keywords
One more - The next number in the count is one more than the number before and there will be one more object in the set.
One less - The previous number in the count is one less than the next number and there will be one fewer object in the set.
Common misconception
Not being secure with the order of the numbers from 11 to 20 when not starting at 0 or 1.
Practice counting starting from different points within 11 to 20 and model the first 3 to establish a pattern.
Teacher tip
Be aware of the commonly missed numbers by your pupils and choose missing numbers which target other numbers to secure understanding before targeting the weaker areas in order to give more practice and increase confidence.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Match the number to complete the sentence
12
13
18
19
Q2.Match the sentence to the number
11
14
16
10
Q3.Which bead string shows 1 less than 15?
Q4.Which bead string shows 1 more than 18?
Q5.What number is 1 more than 15?
Q6.What number is 1 less than 7?
Assessment exit quiz
6 Questions
Q1.If one of three counting cards is 15, what might the cards be?
Q2.If one of three counting cards is 10, what might the cards be?
Q3.If one of three counting cards is 17, what might the cards be?
Q4.You are counting up to 20. Which numbers come after 14 on these cards?
Q5.You are counting back from 20 to zero. Which numbers come before and after 18?
Q6.You are counting up from 0 to 20. Which two numbers will you say before 11?
To help you plan your 1 maths lesson on: Finding the missing number from 0 to 20, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 1 maths lesson on: Finding the missing number from 0 to 20, 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 Counting to and from 20 unit, dive into the full primary maths curriculum, or learn more about lesson planning.