Explain that the digits in the numbers 11 to 19 express position on a number line
Lesson details
Learning outcome
I can explain that the digits in the numbers 11 to 19 express position on a number line.
Key learning points
- The numbers 11 - 19 can be positioned on a number line.
- Saying the teen numbers as one ten and __ ones helps you to position them on a number line.
- There is a link with the position of the numbers 1 - 9 on a number line and the numbers 11 - 29.
- Knowing one more and one less than a number to 20 can help to estimate the position the teen numbers on a number line.
Keywords
One more - One more than is when there is a greater amount by one or another item in the set.
One less - One less than is when there is a smaller value by one.
Estimate - To find a value that is close enough to the right answer, usually with some careful thought involved.
Common misconception
Pupils do not space numbers equally or consistently on a number line.
Show pupils examples of number lines both horizontal and vertical and draw attention to the gaps between numbers. Talk to children about the equal size 'jumps' between them to support understanding.
Teacher tip
Practical creation of a number line can be a useful experience for pupils in this lesson as opposed to viewing or drawing. Use large number cards and a washing line or similar to encourage estimation, placement and reasoning using understanding of teen numbers.
Licence
Lesson video
Loading...
Prior knowledge starter quiz
6 Questions
Q1.How many apples are shown here?
Q2.What number comes next in the count? 6, 7, 8, 9, 10,
Q3.What number is missing in this sequence? 10, 11, 12, , 14
Q4.Which number is in the middle of this number line?
Q5.Look at the number line. If 10 is the whole and 6 is a part, what is the missing part?
Q6.Which place value chart represents the apples?
Assessment exit quiz
6 Questions
Q1.What number is missing in this sequence?
Q2.What number is missing in this sequence?
Q3.What number is the midpoint on this number line?
Q4.What number is the arrow pointing to on this number line?
Q5.What number is the arrow pointing to on this number line?
Q6.Estimate the number shown by the arrow on this number line.
To help you plan your 1 maths lesson on: Explain that the digits in the numbers 11 to 19 express position on a number line, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 1 maths lesson on: Explain that the digits in the numbers 11 to 19 express position on a number line, 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 Composition of numbers 11 to 19 unit, dive into the full primary maths curriculum, or learn more about lesson planning.