Did you know that you can get EVERYTHING in Stage 1, Part B for $99? Go to WHICH CLASS/STAGE? - Stage 1 - Year 2 - Buy Now.

Compare the masses of objects using an equal-arm balance

• Use uniform informal units to measure the mass of an object by counting the number of units needed to obtain a level balance on an equal-arm balance

• Select an appropriate uniform informal unit to measure the mass of an object and justify the choice

• Explain the relationship between the mass of a unit and the number of units needed

• Compare the masses of two or more objects using the same informal units

• Estimate mass by referring to the number and type of uniform informal unit used and check by measuring

• Recognise that mass is conserved