## Thursday, September 24, 2009

### Alvin's Scribe for September 24

Question #6

For a Science Fair experiment, Mitchell measured the height of a plant every Monday for four weeks. He displayed the data in a line graph and a pictograph.

a)What information does each graph provide ?.

Each graph provides the height of the plant for four weeks. The line graph shows the height of each plant using lines, the pictograph shows the height of each plant using pictures (the leafs)
one leaf represents 20 cm.

b)Between which two weeks did the plant grow at the same rate ?.

The plant grew at the same rate between week 2 and week 3.

c)Between which two weeks did the plant change the most in height ?. Which graph shows this more clearly ?.

Between week 3 and week 4 the plant changed the most in height. Both graph shows the growth clearly.

d)Describe one advantage and one disadvantage of using each graph.

The advantage of the line graph is that it it can show data clearly because the intervals. The disadvantage is that it you cant find the exact amount.

The advantage of the pictograph is that it shows data that you can read easily because 1 picture represents a certain amount. The disadvantage is that it cant show exact amounts like 157 or 103.

#### 3 comments:

Mr Montgomery said...

Hi Alvin

Mr Montgomery here. I teach maths to kids your age in Perth Western Australia.

Thanks for taking the time to write in your blog. I'm sure Mr Harbeck appreciates it.

Its a great post except that you left out the pictograph. Without it your explanations don't make sense.

giuseppe841 said...

Goodjob Alvin. You did great dude. I liked how you actually took your time to find a video. I liked how you did everything. Your scribepost is perfect. Goodjob again

elijah841 said...

Good job Alvin ! nice post ! You didnt get the Pictograph though. so yea you should add it in.

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