Primary 2 - Measurement and Geometry
Standard 2.MD.1 - Add and subtract metric units of length with word problems.
Included Skills: Measurement
Length, Mass and Volume • 1.1 measuring - length in metres/centimetres - mass in kilograms/grams - volume of liquid in litres • 1.2 measuring and drawing a line segment to the nearest cm • 1.3 using appropriate units of measurement and their abbreviations cm, m, g, kg, l • 1.4 comparing and ordering - lengths - masses - volumes • 1.5 solving word problems involving length/mass/ volume • 1.6 recognise that the term 'weight' is commonly used to mean mass in everyday situations. • 1.7 compare masses of objects using balance scales. • 1.8 use everyday examples to develop a sense of - how long 1 m/1 cm is, e.g. using a metre ruler, width of a fingernail. - how heavy 1 kg/1 g is, e.g. using a packet of sugar/flour/ rice, a pin, a piece of paper. - how much 1 litre of liquid is, e.g. using a bottle of mineral water/cooking oil, and 1-litre containers in different shapes. • 1.9 use their arm span to show 1 m and estimate length in metres. • 1.10 work in groups to measure the length of curves using a string. • 1.11 work in groups to measure length/mass using appropriate units and explain their choices of units and how the measurement is done, e.g. measure the length of a longer object in metres and the mass of a heavier object in kg. • 1.12 estimate length/mass/volume before measuring it and use the word 'about' (e.g. about 20 cm) to describe the estimation and measurement.