National curriculum content
- Measure, compare, add and subtract: mass (kg/g); volume/capacity (l/ml)
- Use scales
- Measure mass in grams
- Measure mass in kilograms and grams
- Equivalent masses (kilograms and grams)
- Compare mass
- Add and subtract mass
- Measure capacity and volume in millilitres
- Measure capacity and volume in litres and millilitres
- Equivalent capacities and volumes (litres and millilitres)
- Compare capacity and volume
- Add and subtract capacity and volume
What we want children to know
- Compare mass using < and > and order objects based on their masses
- Learn how to read a range of scales to measure mass, including scales with missing intervals
- Measure the mass of objects and record them as mixed measurements in kilograms and grams
- Understand that kilograms are used for heavier objects
- Compare mixed measurements using the inequality symbols
- Use a range of mental and written methods, choosing the most efficient one for each question
- Compare the volume of containers using <, > and =
- Use litres, millilitres and standard scales to explore capacity
- Measure capacity with litres and millilitres together and record measurements as __ l and ___ ml
- Introduce to temperature, thermometers and the units of ‘degrees Centigrade’, written ◦C for the first time
What skills we want children to develop
Use knowledge to solve reasoning and problem solving questions such as:
Put these measurements in order starting with the largest.
Half a litre Quarter of a litre 300ml
Explain your thinking.
Write more statements
If there are 630ml of water in a jug. How much water do you need to add to end up with a litre of water?
What if there was 450ml to start with?
Make up some questions like this.
Position the symbols
Place the correct symbols between the measurements > or <
930 ml ___ 1 litre
Explain your thinking.
- How can we measure the mass of an object?
- Using the symbols <, > or =, what can you tell me about each of the scales?
- Which container has the largest/smallest capacity? How do you know? Can we order them from largest to smallest?
- What does capacity mean? What does volume mean?
- How many millilitres are in 1 litre? If we know this, what else do we know?
- What methods can we use to add volumes or capacities?