Volume as additive
Recognise volume as additive; find volumes of composite solid figures made of two or more non-overlapping right rectangular prisms
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Set out your lesson
“If an L-shaped swimming pool is made of two rectangular sections, can your child find the volume of each section separately and add them to get the total volume of the pool?”
Full guide and materials
- Activity. Recognise volume as additive; find volumes of composite solid figures made of two or more non-overlapping right rectangular prisms
What to notice. Decompose an L-shaped solid into two cuboids and calculate total volume • Solve a real-world problem requiring the volume of a composite figure (e.g. a step-shaped structure) • Explain why splitting a composite solid into rectangular prisms allows calculation of total volume
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If an L-shaped swimming pool is made of two rectangular sections, can your child find the volume of each section separately and add them to get the total volume of the pool?
Recognise volume as additive; find volumes of composite solid figures made of two or more non-overlapping right rectangular prisms
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Check understanding
- Decompose an L-shaped solid into two cuboids and calculate total volume
- Solve a real-world problem requiring the volume of a composite figure (e.g. a step-shaped structure)
- Explain why splitting a composite solid into rectangular prisms allows calculation of total volume
“If an L-shaped swimming pool is made of two rectangular sections, can your child find the volume of each section separately and add them to get the total volume of the pool?”
Curriculum record
- Type
- Procedural
- Subject
- Mathematics
- Domain
- Measurement
- Age range
- Ages 10–11