Sandra MacDonald 2006Sandra MacDonald 2006

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How do you measure How do you measure up?up?

Metres, decimetres, centimetres

Millilitres and litres

Grams and

kilograms

The great cover-up

Time's up!

Q $100

Q $200

Q $300

Q $400

Q $500

Q $100 Q $100Q $100 Q $100

Q $200 Q $200 Q $200 Q $200

Q $300 Q $300 Q $300 Q $300

Q $400 Q $400 Q $400 Q $400

Q $500 Q $500 Q $500 Q $500

Last Chance

$100 question from metres, $100 question from metres, decimetres, centimetresdecimetres, centimetres

Is the length of your arm span closest to a centimetre, a decimetre or a metre?

$100 answer from metres, $100 answer from metres, decimetres, centimetresdecimetres, centimetres

A small cube is a centimetre long; a rod is a decimetre long. I bet your arm is a lot longer than either of them!

$200 question from metres, $200 question from metres, decimetres, centimetresdecimetres, centimetres

How many base ten rods could you fit along a ruler?

$200 answer from metres, $200 answer from metres, decimetres, centimetresdecimetres, centimetres

Three: each rod measures 10cm or 1dm. Three of them make up 30cm, or 3dm.

$300 question from metres, $300 question from metres, decimetres, centimetresdecimetres, centimetres

Find 2 objects in the room that are about 1 decimetre long.

$300 answer from metres, $300 answer from metres, decimetres, centimetresdecimetres, centimetres

There are many items to choose from: a short pencil, the width of some small books, the length of a calculator, etc.

$400 question from metres, $400 question from metres, decimetres, centimetresdecimetres, centimetres

Estimate the height of the door in metres. Explain how you know.

$400 answer from metres, $400 answer from metres, decimetres, centimetresdecimetres, centimetres

A doorknob is usually about 1 metre from the floor. It is

about half-way down the door, so the height of the

whole door is about 2 metres.

$500 question from metres, $500 question from metres, decimetres, centimetresdecimetres, centimetres

A student at the school is either 12, 24 or 36 decimetres tall. Which measurement makes the most sense? Explain your answer.

$500 answer from metres, $500 answer from metres, decimetres, centimetresdecimetres, centimetres

12 decimetres is a bit more than a

metre. 24dm is close to 2½ metres. That would be higher than the height of

the door! 36dm is more than 3½ metres! Now do you know the answer?

$100 question from Millilitres and $100 question from Millilitres and litreslitres

Which unit of measurement would you use to measure a dose of medicine, millilitres or litres?

$100 answer from Millilitres $100 answer from Millilitres and litresand litres

You’d be in big trouble if you took a litre of

medicine! Usually, you only need 5 or 10 ml of

medicine at a time!

$200 question from Millilitres and $200 question from Millilitres and litreslitres

The small cube in the base ten material will hold about 1 ml of water inside of it. How much water do you think you could put in a teaspoon?

$200 answer from Millilitres $200 answer from Millilitres and litresand litres

Most teaspoons hold about 5ml. But they could hold as little as

4ml or as much as 6ml. A tablespoon holds 3 times as

much as a teaspoon.

$300 question from Millilitres and $300 question from Millilitres and litreslitres

If you opened up the large cube, you could get 1 litre of water inside it. If you took a litre container of milk (the tall skinny one), how much of it could you pour into a large cube without spilling it?

$300 answer from Millilitres $300 answer from Millilitres and litresand litres

That was a trick question! You could pour all of it, if you were careful, because they both hold 1 litre.

$400 question from Millilitres and $400 question from Millilitres and litreslitres

List 3 items that would be measured in millilitres and 3 items that would be measured in litres.

$400 answer from Millilitres $400 answer from Millilitres and litresand litres

Small amounts, like vanilla in a recipe, or medicine are measured in millilitres. So are juice and pop in cans. Larger containers, like large pop bottles or milk cartons, are measured in litres. If you measured the water in your bath tub, you would use litres.

$500 question from Millilitres and $500 question from Millilitres and litreslitres

When might you use millilitres to measure a large amount of liquid? Explain your answer.

$500 answer from Millilitres $500 answer from Millilitres and litresand litres

You might use millilitres if you wanted a more exact or accurate

measurement. You also might use millilitres if you had parts of a litre,

like 57 ½ litres (57 500 litres)

$100 question from grams and $100 question from grams and kilogramskilograms

Grams are used to measure very light objects. A smartie weighs about a gram. Can you think of something else that weighs about a gram?

$100 answer from grams $100 answer from grams and kilogramsand kilograms

Remember, it must be about the mass of a smartie. Three raisins

weigh about a gram. A small wooden cube in the base ten set

weighs a gram.

$200 question from grams $200 question from grams and kilogramsand kilograms

Do you think that 1 kg of potatoes would be a lot to eat at one time or just about right? Explain your answer.

$200 answer from grams $200 answer from grams and kilogramsand kilograms

A small bag of potatoes has a mass of 2 ¼ kg. One kg is almost ½ the bag! You would have to be very, very hungry!

$300 question from grams $300 question from grams and kilogramsand kilograms

Is the mass of your pencil closest to 10g or 10kg?

$300 answer from grams $300 answer from grams and kilogramsand kilograms

Remember the mass of the smartie: your pencil could have the same mass as 10 smarties, but it wouldn’t have the same mass as 4 bags of potatoes!

$400 question from grams $400 question from grams and kilogramsand kilograms

Which unit is more likely to be used to measure a box of paper clips: grams or kilograms? Explain how you know.

$400 answer from grams $400 answer from grams and kilogramsand kilograms

Paper clips are very light, so they will be measured in

grams.

$500 question from grams $500 question from grams and kilogramsand kilograms

If sliced meat sells for $3.50 per gram, is it expensive? Explain how you know.

$3.50 per gram

$500 answer from grams $500 answer from grams and kilogramsand kilograms

Remember, a gram is about the mass of a smartie. If you had to pay $3.50 for every piece of sliced meat the mass of a smartie, you would have to spend a lot of money for enough to make a couple of sandwiches!

$100 question from The great $100 question from The great cover-upcover-up

Which of the following shapes has the largest area? Explain how you know.

$100 answer from The great $100 answer from The great cover-upcover-up

Each shape has units or squares of about the same size. The one with the most units is the orange shape, so the orange rectangle has the largest area.

$200 question from The great $200 question from The great cover-upcover-up

Is the area easier to measure on the shape on the left or the shape on the right. Explain your answer.

$200 answer from The great $200 answer from The great cover-upcover-up

Usually, it is harder to measure the area of shapes with small parts. The star would be tricky to measure.

$300 question from The great $300 question from The great cover-upcover-up

Explain how you know that the area of the shape to the right has to be between 6 and 20 units.

$300 answer from The great $300 answer from The great cover-upcover-up

There are 20 units on the grid or table. The shape almost fills 6 of the units and there are parts of other units filled as well.

$400 question from The great $400 question from The great cover-upcover-up

Does this rectangle show 6 units of area? Explain how you know.

$400 answer from The great $400 answer from The great cover-upcover-up

Units of area have to be standard. If some of the units are larger or smaller than others, they are not standard.

$500 question from The great $500 question from The great cover-upcover-up

Explain how you would go about finding the area of the surface of your desk.

$500 answer from The great $500 answer from The great cover-upcover-up

Your answer must make sense!

$100 question from Time's up$100 question from Time's up

Read the time on the clock:

$100 answer from Time's up$100 answer from Time's up

4:25

$200 question from Time's up$200 question from Time's up

Look at the clock. What time will it be in 15 minutes?

$200 answer from Time's up$200 answer from Time's up

12:50 or ten to one.

$300 question from Time's up$300 question from Time's up

At 9:50, how much time is remaining before recess?

$300 answer from Time's up$300 answer from Time's upThere are 10 minutes remaining before 10:00. Add those ten minutes to the minutes between 10:00 and recess. If recess is at 10:30, 10 + 30 = 40, which means there are 40 minutes between 9:50 and 10:30.

$400 question from Time's up$400 question from Time's up

What time could it be when the two hands are just about on numbers that are one apart?

$400 answer from Time's up$400 answer from Time's up

It could be 11:00, 11:55, 12:05, 1:05, 1:10, 2:05, 2:15, 3:10, 3:20, 4:15, 4:25, 5:20 or 5:30. The hands would be closer together for the following times: 6:25, 6:35, 7:30, 7:40, 8:35, 9:45, 10:45 or 10:55.

$500 question from Time's up$500 question from Time's up

What time might it be if the hands on a clock were opposite one another?

$500 answer from Time's up$500 answer from Time's up

It could be 6:00, 7:05, 8:11, 9:16, 10:22, 11:27, 12:33, 1:38, 2:43, 3:49, 4:54 or 5:59.

Final ChanceFinal ChanceGive three different examples of things that you measure at home on a regular basis. The examples must use different units of measurement. (They can’t all use liquid measurement or linear measurement or area or mass units.)

Final Chance answerFinal Chance answer

Answers must make sense!