Understand addition as increasing a quantity
Lesson details
Learning outcome
I can describe addition stories which involve increasing an amount and write equations to represent them.
Key learning points
- Addition can involve increasing a quantity.
- Using ‘First, then, now’ stories can be useful when representing and understanding addition as an increase in quantity.
Keywords
First - Coming before all others in time or order; earliest.
Then - At that time.
Now - At the present time.
Increase - To make something larger/greater in size or quantity.
Common misconception
Children may write the addends in any order when representing addition as an increase in quantity.
Present and discuss errors, focusing on what each number in an equation represents.
Teacher tip
Focus particularly on the plus sign signifying an increase in size in this context. Ask children to explain relationships between the practical, pictorial contexts and abstract and to justify decisions when matching these to each other.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Tick an addition equation that could represent the counters.
Q2.Tick two subtraction equations that could represent the counters.
Q3.Izzy writes this subtraction equation to represent the bar model. 9 – 2 = ? Which addition equation could also be represented by the bar model?
Q4.Which set of counters could represent this story? There were 2 large teddies and 4 small teddies. How many teddies were there altogether?
Q5.Tick the two equations which could be represented by this bar model.
Q6.Which of these is not an addition story?
Assessment exit quiz
6 Questions
Q1.Alex writes an equation to match this story. 2 + 1 = 3 What does the 3 represent?
Q2.Which story matches the picture?
Q3.True or false. The counters shown represent this story. First, there were 4 cakes on the table. Then, my friend put 3 more cakes on the table. Now, there are 7 cakes on the table.
Q4.Which equation matches the picture?
Q5.Which equation matches the story? First, there were 5 ducks in a pond. Then, 3 more ducks jumped in. Now, there are 8 ducks in the pond.
Q6.Laura has written this equation to match the picture. Is she correct? 5 + 3 = 8
To help you plan your 1 maths lesson on: Understand addition as increasing a quantity, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 1 maths lesson on: Understand addition as increasing a 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 Additive structures: addition unit, dive into the full primary maths curriculum, or learn more about lesson planning.