Counting by 10s

Today in Math we explored effective ways of counting a bunch of 1 yen coins. (There are a lot of them!)

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Some groups counted by 1s at first. During the first round, the fastest group came up with a method of counting by 5s.

After a quick discussion we realised that it probably was fastest to count by 10. So we went on by arranging the coins in rows of 10 and count the number of rows.

We then explored how some Asian languages make counting easier. The way we say the numbers in some languages already helps us  count in 10s.

For example:

Japanese / Chinese Korean
4
10
14 十四 십사
2
90 九十 구십
92 九十二 구십이

We learned that “14” is read as “ten four” in some Asian languages and “92” is read as “nine ten two”.

Measuring using inches and feet

In Math today we measured different things using a foot ruler and a yard ruler. We learned to differentiate between inches/feet and cm/m. For today we used inches and feet. We also learned how to use the ruler properly by starting our measurement from zero instead of one on the ruler. At the end we learned how to convert measurements from inches into feet and inches.

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