Y1 Maths
How Many Left 1 Lesson
This Year 1 How Many Left lesson covers the prior learning of finding one less, before moving onto the main skill of solving simple subtractions using number stories.
The lesson starts with a prior learning worksheet to check pupils’ understanding. The interactive lesson slides recap the prior learning before moving on to the main skill. Children can then practise further by completing the activities and can extend their learning by completing an engaging extension task.
National Curriculum Objectives
Mathematics Year 1: (1N1a) Count to and across 100, forwards and backwards, beginning with 0 or 1, or from any given number
Mathematics Year 1: (1C2a) Add and subtract one-digit and two-digit numbers to 20, including zero
Mathematics Year 1: (1C4) Solve one-step problems that involve addition and subtraction, using concrete objects and pictorial representations, and missing number problems such as 7=_________ 9
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2 Teaching Support
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Lesson Slides
These lesson slides guide pupils through the prior learning of finding one less, before moving onto the main skill of how many left 1. There are a number of questions to check pupils' understanding throughout.
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Modelling Powerpoint
This powerpoint can be used to model the questions that the children will complete on the Varied Fluency and Reasoning & Problem Solving worksheets as part of this lesson.
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Lesson Slides
These are the same as the lesson slides on Classroom Secrets. You can assign this as an activity for pupils to access individually in school or remotely from home.
1 Prior Learning
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Worksheet
This worksheet recaps prior learning of finding one less, before moving onto the main skill of solving simple subtractions using number stories.
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Interactive Activity
This Reception One Less Than Game will help children remember number facts in a fun way.
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Interactive Activity
This Reception Recalling One Less Game will help children to identify the number that is one less than a given number.
2 Practical Activities
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Practical Activities
These practical activities include tasks covering a range of provision areas for pupils to practise the main skill of how many left 1.
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Supporting Activity
This how many left 1 supporting activities sheet contains suggestions for additional tasks you might wish to use to support pupils' understanding of the concepts taught in the lesson.
2 Varied Fluency
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Worksheet
This differentiated worksheet includes varied fluency questions for pupils to practise the main skill of this lesson.
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Mixed Practice
This worksheet includes varied fluency questions for pupils to practise the main skill of how many left 1.
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Interactive Activity
This Year 1 How Many Left 1 Game is designed to check pupils’ understanding of subtracting to find out how many are left.
2 Reasoning & Problem Solving
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Worksheet
This differentiated worksheet includes varied fluency questions for pupils to practise the main skill of this lesson.
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Discussion Problem
This worksheet includes two discussion problems which can be used in pairs or small groups to further pupils' understanding of the concepts taught in this lesson.
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Interactive Challenge Activity
This Year 1 How Many Left 1 Maths Challenge is designed to check pupils’ understanding of subtracting to find out how many are left.
2 Homework
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Worksheet
This differentiated worksheet includes varied fluency and reasoning and problem solving questions to support the teaching of this step.
2 Additional Activities
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Home Learning Pack
This Autumn week 8 Maths pack contains varied fluency, reasoning and problem solving worksheets.
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Consolidation Pack
This resource is aimed at Year 1 Expected and has been designed to give children the opportunity to consolidate the skills they have learned in Autumn Block 2 – Addition and Subtraction.
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Learning Video Clip
Dot the dinosaur and her friend Stan are happy to be back home again. It’s a very hot day so they go down to the river to splash in the water. Help Dot and Stan to work out how many different things are left in this adventure.
