measure and compare objects based on length, capacity and mass using appropriate uniform informal units and smaller units for accuracy when necessary

How Bloomi helps with this

This is a readiness-year topic that builds towards the next NAPLAN year. Bloomi practises it as curriculum mastery, never test drilling.

What this looks like in the classroom

• choosing suitable informal units to measure the length of a range of objects; justifying their choice of a longer unit to measure things that are long, such as the width of a room, and a shorter unit to measure shorter things or when more accuracy is needed
• comparing the capacity of several containers using sand and units such as a spoon or cup, to say which container will hold the most and how much more it will hold; recording the results, writing an explanation of their measurement process, including using smaller units to be more accurate, and justifying the result
• using balance scales to compare the mass of several objects, selecting an appropriate informal unit; counting the number of informal units to determine which object is heavier and how much heavier; explaining why the informal units chosen need to be the same mass