# YEAR 6 MATHS FOCUS

## MEASUREMENT AND GEOMETRY

Mass

Learning Experiences

Mass

## MASS

OUTCOME

A student:

MA3-12MG:

selects and uses the appropriate unit and device to measure the masses of objects, and converts between units of mass

TEACHING POINTS | One litre of water has a mass of one kilogram and a volume of 1000 cubic centimetres. While the relationship between volume and capacity is constant for all substances, the same volumes of substances other than water may have different masses, e.g. 1 litre of oil is lighter than 1 litre of water, which in turn is lighter than 1 litre of honey. This can be demonstrated using digital scales. See also Year Five |

LANGUAGE | Students should be able to communicate using the following language: mass, measure, scales, tonne, kilogram, gram. |

As the terms ‘weigh’ and ‘weight’ are common in everyday usage, they can be accepted in student language should they arise. Weight is a force that changes with gravity, while mass remains constant. |

## EXPECTATIONS OF ATTAINMENT

Connect decimal representations to the metric system (ACMMG135) | recognise the equivalence of whole-number and decimal representations of measurements of mass, e.g. 3 kg 250 g is the same as 3.25 kg |

interpret decimal notation for masses, e.g. 2.08 kg is the same as 2 kilograms and 80 grams | |

measure mass using scales and record using decimal notation of up to three decimal places, e.g. 0.875 kg |

Convert between common metric units of mass (ACMMG136) | convert between kilograms and grams and between kilograms and tonnes |

– explain and use the relationship between the size of a unit and the number of units needed to assist in determining whether multiplication or division is required when converting between units, e.g. ‘More grams than kilograms will be needed to measure the same mass, and so to convert from kilograms to grams, I need to multiply’ {Communicating, Reasoning, Critical and creative thinking} | |

solve problems involving different units of mass, e.g. find the total mass of three items weighing 50 g, 750 g and 2.5 kg {Critical and creative thinking} | |

relate the mass of one litre of water to one kilogram |

Learning Experiences

To be added