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# Cubirocks are measured!

TLF ID L162

Help three cuboid characters to estimate the volume of cube-shaped rocks made by a special volcano in 'Cubiland'. Each character uses a different measuring unit: small, medium-sized or large. Use a measuring cube to help estimate the volume of different 'cubirocks' made up of cubes. Complete a data table. Volumes range from 1 unit up to 162 units (3x3x3x6). Notice cubic number patterns in your completed data table. This learning object is one in a series of three objects.

#### Educational details

Key learning objectives
• Students use ratios to estimate the volume of solids made up of cubes.
• Students explore relationships between unit size and volume.
Educational value
• This resource is useful for the Australian Curriculum content description in year 4 mathematics about calculating and comparing volumes of three-dimensional shapes using informal units.
• It may also be relevant to applying ratios to solve problems at year 7 and to recognizing and using multiples at year 5.
Year level

4; 5; 6; 7

Learning area
• mathematics
Strand
• Mathematics/Number and algebra
• Mathematics/Measurement and geometry
Concept
• Mathematics/Volume (Measurement)
• Mathematics/Estimating (Mathematics)

#### Other details

Contributors
• Technical implementer
• Subject matter expert
• Publisher
• Date of contribution: 27 May 2014
• Organisation: Education Services Australia
• Address: Melbourne VIC 3000 Australia
• URL: http://www.esa.edu.au/
Access profile
• Colour independence
• Device independence
• Hearing independence
• Generic
Learning resource type
• Interactive Resource
Browsers
• Microsoft Internet Explorer - minimum version: 8.0 (MS-Windows) - maximum version: 9.0 (MS-Windows)
• Firefox - minimum version: (MS-Windows)
• Safari - minimum version: 5.1 (MacOS)
Operating systems
• MacOS - minimum version: 10.6
• MS-Windows - minimum version: XP - maximum version: 7
Rights
• © Education Services Australia Ltd, 2013, except where indicated under Acknowledgements.