Combine parts using the addition symbol
I can partition a whole in different ways and use an addition symbol when recombining them.
Combine parts using the addition symbol
I can partition a whole in different ways and use an addition symbol when recombining them.
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Lesson details
Key learning points
- When a whole is partitioned into parts, it can be represented using the addition symbol.
- The addition symbol shows that the parts combine to make the whole.
- We can describe the parts to help us understand how to represent them.
- A whole group can be partitioned in different ways.
Keywords
Partition - To split a whole up / to separate a whole into parts.
Parts - A piece or section of a whole.
Whole - All of something. Complete.
Plus - Another word for add. The symbol is +.
Combine - To put parts together to make a whole.
Common misconception
Children may have difficulty understanding partitioning of the whole group where one part is zero.
Include contexts with zero, so children can discuss and clarify their thinking.
To help you plan your year 1 maths lesson on: Combine parts using the addition symbol, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 1 maths lesson on: Combine parts using the addition symbol, 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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Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Which picture shows Sofia’s whole group of cakes.
Q2.Look at the picture. How many pieces of fruit are in the whole group?
Q3.Which part-part-whole model correctly represents this stem sentence? 5 is the whole, 1 is a part and 4 is a part.
Q4.Which of the following is correct?
Q5.Which one of these numbers cannot be a part of the whole in the picture shown?
Q6.Complete the stem sentence 7 is the whole: 2 is a part and is part.
Assessment exit quiz
6 Questions
Q1.There are 3 large cars and 4 small cars. We can represent this as...
Q2.Jacob has some chocolate cakes and some cherry cakes (plain with a cherry on top). He represents them like this, 4 + 2. What does the 4 represent?
Q3.Sofia represents this picture like this, 3 + 4. Match each numeral or symbol to the correct description of what it represents.
the cups with juice
the parts combine to make the whole
the empty cups
Q4.Which pictures represents 7 + 2
Q5.Use numerals and the plus sign to represent the fingers held up in this picture.
Q6.Which of the following does not represent the picture?