Bài 5: Measurement length (part 1)

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https://www.youtube.com/watch?v=berj0-RMm4M

Hey Stary! Look at what are the father and son doing?

Uh, they want to measure how long thic piece of ribbon is.

                                             

Look at how are they measuring Stary?

They are using the span of their hand.

This is called a hand-span.

Stary look! When the boy measures the length of the string it comes to eight hand-spans.

Whereas when the father measures it the length of the string is 5 hand- spans.

But it is the same string.     

So tell me why is there the different in this length?

The father and the son has different hand- span.

The father’s hand- span is bigger than the son.

Now look at! What they have in their hands.

Oh! They are using a tape measure for the same job.

Hey, look Stary!

Now both the tape measures show the same length. That is 120cm

Stary! We can also use a scale for the same purpose.

When length is measured using devices like a tape measure or scale, we get the same measure no matter who measure its.

Let us see what are can be measured using a measuring scale or a tape measure.

We can measure the height of furniture or our height, the length and breadth of cloth or table, the depth of tank or vessel & the thickness of the book of a door or a table.

You can have a lot of fun measuring with the tape measure or scale. Those have fun!

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