Compare and Order Shapes and Objects Using Informal Units (2)

Compare and order several shapes and objects based on length, area, volume and capacity using appropriate uniform informal units (ACMMG037)

Compare masses of objects using balance scales (ACMMG038)

LO: To compare and order shapes and objects.

Know:

  • the basic metric units of measurement.

  • how to use scaled instruments to measure objects.

  • the definition of ascending and descending order.

Understand:

  • that we can order and compare shapes and objects based on length, area, volume, capacity and mass.

  • that there are specific units that we use to measure specific properties of an object.

Do:

  • I can order and compare shapes and objects based on length, area, volume, capacity and mass.

  • I can measure the object and make indirect comparisons with other objects.

Length

Length measurements are used to measure how long, how tall or how far apart objects are.

Informal units when comparing lengths could be using finger lengths, hand spans, pace or a piece of string.

Teaching Ideas

Area

Area measurements are used to measure the amount of space a 2-D object takes up.

Informal units to measure area could be the palm of their hand, kinder square or a stone.

Teaching Ideas

Volume

Volume measurements are used to measure the amount of space a 3-D object takes up.

Teaching Ideas

Capacity

Capacity measurements are used to measure how much an object can maximally hold.

We can compare capacities using a range of containers.

Teaching Ideas

Mass

Mass measurements are used to measure how much material there is in an object. It is sometimes confused with weight, which is how much pull gravity has on an object. Remember to keep in mind that something that is large may not have as much mass as something smaller. Think of a foam dice vs. a rock.

Teaching Ideas

Interactives

Measurement Videos

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