Crossing the tens boundary counting forwards and backwards
I can count forwards and backwards within 100, crossing the tens boundary.
Crossing the tens boundary counting forwards and backwards
I can count forwards and backwards within 100, crossing the tens boundary.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- The numbers from 0 to 100 have patterns that can help us to count forwards and backwards across the tens boundary.
- They are arranged differently on a number track and on a one hundred square.
- We can count the numbers in two ways.
- When a number ends in a 9, it is always followed by a decade number when counting in ones.
Keywords
Cross the tens boundary - The point at which the counting moves from one decade into another.
Forwards - When you count forwards the number become greater.
Backwards - When you count backwards the number become less.
Common misconception
Confusion around the numbers which cross the tens boundary, e.g. 39, 40 may say 39, 30
Make errors for the children to discuss; encourage them to explain and correct mistakes.
To help you plan your year 1 maths lesson on: Crossing the tens boundary counting forwards and backwards, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 1 maths lesson on: Crossing the tens boundary counting forwards and backwards, 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.
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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 Pattern in counting from 20 to 100 unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Lesson video
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Starter quiz
6 Questions
Exit quiz
6 Questions
