Volume and Capacity Unit: Volume of Rectangular Prisms, cm³ and m³, Years 5–6

Volume of rectangular prisms in cm³ and m³, mL and L

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About this resource

This unit starts at a lemonade stall and ends with students building a cubic metre. In between they sort out volume and capacity, read jug scales, write capacities like 375 mL as 0.375 L, and find the volume of rectangular prisms by counting layers of cubes.

How it runs

Three to four lessons of 45–60 minutes. Begin with the lemonade recipe card. Students sort units (Leo thinks a bucket holds 10 mL), read Jugs A to D for the lemonade savings task and use a place-value chart for decimal capacities. The chart is there because students will tell you 2 L 40 mL is 2.4 L.

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More in Volume and Capacity

See all 4 resources

They build prisms with centicubes, describe them as cubes in one layer × number of layers, and find every prism with a volume of 24 cm³. In the answer check, Leo works out one layer of a 5 × 4 × 3 box and stops at 20 cm³, and Amira adds the height instead of multiplying. Then they test Leo's estimates and calculate volumes in m³. The Case of the Mystery Box, a 20-card memory game and a summary page come last.

Maths covered

MA3-3DS-02: choose units, read capacity scales, convert between mL and decimal litres (to 3 decimal places), and estimate and calculate volumes in cm³ and m³
MA3-MR-01: multiply the cubes in one layer by the number of layers to find volume
Extension (Stage 4): 1 mL = 1 cm³ and 1 L = 1000 cm³ appear only in clearly labelled boxes (MA4-VOL-C-01)

Good to know

Centicubes and measuring jugs help. Twelve metre rulers and tape for the cubic metre are optional.
Refreshed from my 2021 Volume and Capacity Masterclass for the 2022 NSW syllabus.
Maths Detectives characters and Keynote fonts included.

What’s included

36 teacher slides with answers (editable Google Slides / PowerPoint + PDF)
17-page A4 student booklet (PDF)
Black and white booklet for low-ink printing
Editable PowerPoint copy of the booklet (colour and black and white)
Pre-test, 20-card memory game and a detective case file
Reflection page with a "How did I go?" self-assessment against the success criteria, and a certificate
Teacher instructions with lesson plan and answer key