About 250 ml: estimating volume; cake and bed
We measure liquids in millilitres (ml) and litres (l). One litre is 1,000 millilitres. A small teaspoon holds about 5 ml, a glass holds about 250 ml, and a big bottle of water holds about 1.5 litres, or 1,500 ml. When we estimate, we say about. To find a total, we add the amounts: 250 + 250 + 100 = 600 ml. Now the sounds. Cake, train, say and wait have the long sound /ei/. Bed, head, red and bread have the short sound /e/. Listen and say them.
| Container | Volume (about) |
|---|---|
| teaspoon | 5 ml |
| tea cup | 150 ml |
| glass | 250 ml |
| jug | 1 litre = 1,000 ml |
| big bottle | 1.5 litres = 1,500 ml |
How much juice do we need for four guests?
Each guest drinks about 250 millilitres.
So that is 250 times 4 millilitres. It is 1,000 millilitres.
Yes, that is exactly 1 litre. So we need one jug.
Great! And I will add 100 millilitres for me.
A man waits for a train. The men wait for the train.
She has pain in the head. She has a pen and a red bed.
Pour and count. Use a clean jug of water and a small cup with the grown-up. Estimate how many cups fill the jug. Then pour and count. Say: I estimate about six cups. It is seven. Do it again with a bigger cup and a smaller cup.
…