Mass Units of Work

The mass of an object is a measure of the amount of matter in it. Weight is the force that gravity exerts on an object and so can vary from place to place. The terms mass and weight are used loosely, and inaccurately, in everyday speech to mean the same thing. The NZ curriculum document reflects the correct use of the terminology and uses the term mass not weight.

Level 1 Mass

Achievement Objectives	Learning Outcomes	Unit title
GM1-1	push, pull, lift and handle objects in order to become aware of mass compares 2 masses by pushing and lifting pack materials and fill containers pour liquids from and into containers	Tricky Bags
GM1-1	compare two objects by weight order three or more objects by weight describe the weight of objects using comparative language, for example, heavier, lighter	Seesaws
GM1-1 NA1-1 NA1-2	compare a group of 3 or more objects by mass measure mass with non-standard units	Measuring beads

Level 2 Mass

Achievement Objectives	Learning Outcomes	Unit title
GM2-1	estimate weight in kilograms and grams measure accurately using kilograms and grams	Weighing Stations
GM2-1	recognise a 100 gram mass record measurements in kg and g using decimal notation accurately measure specific amounts of materials	Great Grams
GM2-1 GM2-2	use objects of 1kg mass to estimate the mass of other objects discuss the need for having and using standard measures of mass make sensible estimates about the mass of given objects explain the meaning of metric prefix terminology (e.g kilo)	Making benchmarks - mass

Level 3 Mass

Achievement Objectives	Learning Outcomes	Unit title
GM3-1	recognise the need for a standard unit of mass recognises a kilogram mass relates the kilogram to everyday containers and familiar non-standard units	Supermarket shopping

Level 4 Mass

Achievement Objectives	Learning Outcomes	Unit title
GM4-1	select the appropriate standard unit of measurement for a specific application measure masses with appropriate measuring devices measure net and gross mass	Weighty problems