Explain that the digits in the numbers 11 to 19 express quantity
Lesson details
Learning outcome
I can explain that the digits in the numbers 11 to 19 express quantity.
Key learning points
- The digits in the numbers 11-19 tell us about their value.
- The teen numbers are between 10 and 20
- The teen numbers can be represented as ten and a bit.
- We can say there is one ten and --- ones.
Keywords
Teen numbers - A number made of a ten (a group of 10 ones) and some additional ones.
Tens - A ten is a group of 10 ones.
Ones - Individual objects, grouped in ones.
Common misconception
Pupils confuse e.g. 18 and 80 because they sound similar.
Take time to emphasise the pronunciation of the teen numbers and provide lots of opportunities for pupils to say and repeat the words. You may wish to practise the teen and decade numbers side by side so pupils can hear the difference.
Teacher tip
One key aspect in this lesson is the concept of a group of 10 and that a teen number can be partitioned into a ten and some additional ones. Ensure they have lots of practical experience in making and grouping 1 ten using a range of manipulatives.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What number comes next in the count? 6, 7, 8, 9 .
Q2.What number is missing in this sequence? 6, 7, 8, 9, 10, , 12
Q3.How many apples are there?
Q4.How many oranges are there?
Q5.Jun and Sofia are counting the pencils. Who is correct?
Q6.How many pencils are there?
Assessment exit quiz
6 Questions
Q1.Which of these statements about teen numbers is correct?
Q2.How many apples are shown here?
Q3.How many pencils are shown here?
Q4.Which numeral represents a teen number?
Q5.Which place value chart represents the oranges?
Q6.Which place value chart represents the pencils?
To help you plan your 1 maths lesson on: Explain that the digits in the numbers 11 to 19 express quantity, 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 quantity, 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.