# Mass Units of Work

The Ministry is migrating nzmaths content to Tāhurangi.
Relevant and up-to-date teaching resources are being moved to Tāhūrangi (tahurangi.education.govt.nz).
When all identified resources have been successfully moved, this website will close. We expect this to be in June 2024.
e-ako maths, e-ako Pāngarau, and e-ako PLD 360 will continue to be available.

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 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 recognise a 100 gram mass record measurements in kg and g using decimal notation accurately measure specific amounts of materials Great Grams GM2-1GM2-2 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