# GM2-1: Create and use appropriate units and devices to measure length, area, volume and capacity, weight (mass), turn (angle), temperature, and time.

This means students will recognise that the attributes length, area, volume and capacity, and weight can be measured. At Level Two students are expected to recognise that measurement units are countable and therefore able to be partitioned and recombined in the same way as other units of one. For example, if an 8 unit length is cut from a 14 unit long strip the remainder will measure 6 units. Units of measure have other characteristics including being a part of the attribute they measure and uniformity (same size). When measuring, the units need to fill a length, space, time etc, with no gaps or overlaps (this is known as tiling). Students should create measurement devices, for example rulers, rod towers, scales, to quantify the attributes of objects in numbers of units. In doing so they should develop an understanding that the marks on a linear scale show the endpoint of units and that scales always have a baseline (zero). Less tangible attributes such as turn (angle), temperature and time should also be measured. While the focus at Level Two is on students’ understanding the role of units in measurement it is also expected that students will encounter simple standard measures such as metres, centimetres, kilometres, minutes, seconds, kilograms, litres, etc, through using everyday measurement instruments.

Students will be able to relate the features of the calendar to their number knowledge.

Students will be able to demonstrate how grouping is efficient way to organise their thinking and operating with larger numbers.

- Recognise the need for a standard unit of length.
- Recognise a centimetre length.
- Estimate and measure to the nearest centimetre.

tell the time on analogue clocks

- Understand clockwise and anticlockwise directions.
- Understand that quarter half turns may be begun from any direction and not just from lines parallel to the classroom walls or other fixed lines.

- Tell time to the hour, half and quarter hour using analogue clocks.
- Tell time to the hour, half hour and quarter hour using digital clocks.
- Solve time problems involving hours, half and quarter hours.

measure temperature with a thermometer

- Students will explore and compare the volume of different containers using non-standard and standard units.
- Students will be able to explain why standard units of volume are necessary when making comparisons.

read and write clock times

interpret a calendar

solve problems using a timetable diary

- Students will be able to use the vocabulary associated with calendars to accurately talk about the duration and time between events.
- Students will be able to read a calendar and express the time in standard units (day, week, month, year).

measure volume using multilink cubes

- Understand how running a distance contributes to fitness and wellbeing.
- Create a personal benchmark for 1 metre and for 1 kilometre.
- Accurately use three measuring devices to measure a distance of more than 3 metres.
- Correctly record length measurements using abbreviations.
- Understand how300

continue a sequential pattern

write a rule to describe a sequential pattern

give instructions using distance and direction

- Recognise a 100 gram mass.
- Record measurements in kg and g using whole numbers.
- Accurately measure specific amounts of materials.

measure lengths in centimetres

Students will:

- measure weight, depth, and salt concentration (which is effectively a measure of density)
- find the relationship between the force involved in buoyancy and water density
- find the relationship between the weight of a boat and its floating depth (for a given hull profile)
- record data in300

- Estimate the time taken for daily activities in hours and minutes.
- Use advanced counting or partitioning strategies to solve problems involving minutes and hours.
- Check the reasonableness of answers obtained using a calculator.

Students will be able to accurately estimate the duration of time using the units of minute and second.

Students will be able to measure the duration of events using stopwatches and other timers.