Unit of work on measurement, particularly, mass.

2. MEASUREMENT – MASS
TOP 5
1. I can convert between units as appropriate.
2. I know the relationship between units of
measurement.
3. I know which units are suitable for measuring in
different contexts.
4. I can explain how the metric system relates to
our Base 10 number system.
5. I can use my understanding of measurements
to solve problems.

3. MENTAL ROUTINE
Closed questions:
• State what unit of
mass you think
would be
sensible to use
when measuring
the mass of the
following
objects:
•A cow
•An elephant
•A pair of scissors
•A drawing pin
•A truck
•A fridge
•A tablet (medicine)

4. MENTAL ROUTINE
If 1 kg equals 1 000g how many
grams in:
• Half a kilogram

5. MENTAL ROUTINE
If 1 kg equals 1 000g how many
grams in:
• A quarter of a kilogram

6. If 1 kg equals 1 000g how many
kilograms in:
• 2 000g
• 5 000g

7. MENTAL ROUTINE
How much would a bag weigh if it
contained 200g of jam and 900g
of oranges?

8. MENTAL ROUTINE
How much would a bag weigh if it
contained:
• 1.5 kg of potatoes and 4L of
milk?

9. MENTAL ROUTINE
Open Questions: (more than one
correct answer)
• How much would your drink
bottle weigh if it was full?

10. MENTAL ROUTINE
• If I weigh 60kg, what would
physiotherapists recommend
in terms of weight for my
backpack? (Not more than
10% of my weight)

11. MENTAL ROUTINE
• What could I put in my
backpack so that I don’t strain
my back too much? Show the
items, weights and totals.

12. MENTAL ROUTINE
Flip Question:
Guess the mass I have in my mind.
Use a range of language to ask yes and no questions.
Fractions
Greater than
Less than
Items that could be measured in the unit

13. MASS AND THE BASE TEN SYSTEM
. Th H T O Tths Hths Thths 10
Thths
100
Thths
Mths
kg g mg
t kg g mg
1 kg = 1 000 g
1 g = 1 000 mg
1 t = 1 000 kg
.

14. USE RELATIONSHIPS TO FIND:
• A van can carry a maximum weight
of 700 kg. Write this mass in
tonnes.
• Find how many milligrams are in:
•20g
•2g
•0.2g

15. PROBLEMS TO SOLVE:
• How many 20 gram chocolates
would there be in a box with a
mass of 240 g?

16. PROBLEMS TO SOLVE:
• A packet contains 10 tablets,
each weighing 500mg. Find the
total mass of the tablets, in
grams.

17. PROBLEMS TO SOLVE:
• Sliced ham cost $9.80 per
kilogram. How much does it
cost to buy 300 grams?

18. PROBLEMS TO SOLVE:
• A large sheet of paper weighs
80 g. Find the mass of 1 000
sheets. Answer in kilograms

19. PROBLEMS TO SOLVE:
• Jane and Toby are moving
house. They have packed their
household items into boxes.
There are 53 boxes and they
guess the boxes have an
average mass of 12 kg. What
mass are they moving? Is it
more or less than half a tonne?

20. PROBLEMS TO SOLVE:
• Harry bought these items at the
supermarket: 350 g of bacon,
500 g of sausage, 340 g of
cheese and 110 g of olives. Find
the total mass of his purchases.

21. REFLECTIVE QUESTIONS:
• Which strategies were helpful?
• What was tricky/ challenging?
• What helped you to solve
problems?
• Which was more efficient (brain
saving)?
• What will you try next time?