Room Twelve's Maths group is learning how to tell the time in all sorts of different ways. The green and orange groups are making clocks to help them. This is Logan Ramage's clock. The little lines are the minutes the big lines are every five minutes.
Mr P adds:
We wondered why the people who created the clock decided have 24 hours in each day? Why not 10? We also asked ourselves why there are 60 seconds in an hour? Why not 50 or 100?
We noticed that 10 has these factors; 1, 2, 5, 10. That's only four factors.
We noticed that 24 has these factors: 1, 2, 3, 4, 6, 8, 12, 24. That's eight factors! This means that by have 24 hours in a day we can divide our day up into lots of different sized periods of time.
We noticed that 50 has these factors: 1, 2, 5, 10, 25, 50 (only six) but 60 has: 1, 2, 3, 4, 5, 12, 15, 20 30, 60 (That's 10 factors). This means we can divide our hour up into even time periods in 10 different ways! Handy!
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