Year 6 - Maths
Identify the missing part using knowledge of relationships and structures
Use knowledge of part-part-whole structure to solve additive problems
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils will identify the mathematical structures within stories and use their knowledge of additive structures to create stories and to solve problems.
Lesson Summary
You will learn to identify the missing part using knowledge of part whole relationships and structures.
Key Notes
- A representation helps to identity the parts and wholes.
- A representation helps to identify a missing part.
- A representation helps to identify the calculation needed to find the missing part.
Vocabulary To Learn
- Equivalent: Two or more things are equivalent if they have the same value.
- Solution: A solution is a value, or set of values, that can be put in place of an unknown which makes the equation true.
Common Mistakes To Avoid
- Pupils think that the missing part(s) must be a different colour rod to those parts already used within the example.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
A representation helps to identity the parts and wholes. A representation helps to identify a missing part.
2. Use this key word in a maths sentence and explain it clearly. 'Equivalent'
Two or more things are equivalent if they have the same value. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Pupils think that the missing part(s) must be a different colour rod to those parts already used within the example. Correction: Provide pupils with various examples, in particular examples where there are two or more of the same part, drawing on the repeated addition/multiplicative structure not just the additive structure.
More Lessons In This Unit
- Create stories to match structures presented in a model Study Guide
- Explain how a combination of different parts can be equivalent to the same whole Study Guide
- Identify structures within stories and use knowledge of structures to create stories Study Guide
- Represent an equation in a part-part-whole model correctly Study Guide
- Use a model to interpret a part-part-whole problem with three addends Study Guide
- Use knowledge of additive structure to solve problems Study Guide
- Use mental strategies and known facts to calculate the value of a missing part Study Guide
- Use part-part-whole structures to solve additive problems in a range of contexts Study Guide
- Use written strategies and known facts to calculate the value of a missing part Study Guide
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