Year 1 - Maths
Understanding part-part-whole relationships
Additive structures: addition
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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 combine 2 or more parts to make a whole. They will learn addends can be represented in any order and that the = sign shows the whole and sum of the parts are equal.
Lesson Summary
You will learn to understand the relationship between equations, part-part-whole models and problems they represent.
Key Notes
- Drawing a part-part-whole model can help you to understand a mathematical story or equation.
- Moving counters or cubes within a part-part-whole model can help you to understand a mathematical story or equation.
- Describing a problem or equation can help you understand it.
- You can tell a story to represent an equation or completed part-part-whole model.
Vocabulary To Learn
- Equation: An equation says that two things are equal. It will have an equal sign ( = ) and the expression on either side will have the same value.
- Part-part-whole model: This shows how the whole can be partitioned into parts and recombined. It demonstrates the equality between the parts and the whole.
Common Mistakes To Avoid
- When using part-part-whole models, children may put counters in the parts and whole simultaneously.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Drawing a part-part-whole model can help you to understand a mathematical story or equation. Moving counters or cubes within a part-part-whole model can help you to understand a mathematical story or equation.
2. Use this key word in a maths sentence and explain it clearly. 'Equation'
An equation says that two things are equal. It will have an equal sign ( = ) and the expression on either side will 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: When using part-part-whole models, children may put counters in the parts and whole simultaneously. Correction: Work practically, moving counters to show we can partition the whole into parts and recombine the parts to make the whole again.
More Lessons In This Unit
- Add parts to find the value of the whole and write the equation Study Guide
- Combine parts using the addition symbol Study Guide
- Find the missing part in an equation Study Guide
- Partition a whole into two parts and write as a subtraction equation Study Guide
- Understand addition as increasing a quantity Study Guide
- Understand that parts can be represented in any order Study Guide
- Understand the relationship between addition and subtraction Study Guide
- Understand the use of the equals sign in equations Study Guide
- Using bar models to subtract Study Guide
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