Measurement

Exploring the concept of speed. Students will realise that speed is made up of two measurements, one of distance travelled, and one of time taken. These two measurements can be used to calculate speed, which can be converted to different units.

L.I. Students will be able to 1. use appropriate scales, devices & metric units for length, area, volume & capacity, weight (mass), temperature, angle and time. 2. convert between metric units, using whole numbers and commonly used decimals. 3. use a range of multiplicative strategies when operating on whole numbers. S.C. We will (nzmaths.co.nz)
 * calculate speed from measured distance and time
 * solve multiplication problems using doubling and halving strategies
 * use know multiplication facts to solve multiplication problems

__Wednesday 30 March 2011__

My estimation for running km per hour was 12 km per hour After test I have discovered that I can run 13.5 km per hour.

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__Thursday 31 Mach 2011__

What speed can a student travel by bike? Estimation: 21km per hour Actual: 20 or 19.672km per hour

How many meters per second can a student travel by bike? Estimation: 5m Actual:5.4m per sec

I worked this out by going 60 ÷ 3.05 = 19.672

The way I worked it out was I worked out how many second in 3.05 which is 185 seconds, then you go 185 ÷ 1000 = 5.4m per sec.

I now know that to convert km in to km per hour you have to go 60 ÷ _ = to find your answer. I find that the book was actually harder than what it looks like. It was difficult to calculate how many km they were doing because some of them were in milliseconds. I still need help with my converting.

__Friday 1 April 2011__

How many km per hour all the world record holders are going and meters per second.

100m Men: 9.58 seconds: Usain Bolt 10.43 Mph || 44km per hour

Woman: 10.49 seconds: Florence Griffith-Joyner 9.53 Mph || 41.375 km per hour

200m Men: 19.19 seconds: Usain Bolt 10.42 Mph ||44km per hour

Woman: 21.34: Florence Griffith-Joyner 9.37 Mph || 41.09 km per hour

1km Men: 58.875 seconds: Arnaud Tourant 19.98 Mph || 61.2 km per hour

500m Woman: 34 seconds: Anna Meares 14.7 Mph || 55km per hour