Remember: A price chart is a line of prices over time, and it shows the past only. Across is time, up is the price, and nobody can draw the line after the last dot.
Read and answer
Read the story first, then answer.
Reading the Lemon Co. chartThe Lemon Co. price chart hung on the market wall, and Ben thought it looked like a scribble until Maya said, "Let's read it together." Every chart starts with two lines, one across and one up. Across is time, here eight weeks, and up is the price of one slice, in pretend coins. A dot shows one moment. In week one the price is ten, so follow across to the week, then up to the price. Maya added a dot for every week: ten, twelve, eleven, fourteen, thirteen, eight, eleven and fifteen. Joining the dots with a line shows how the price moved. A climbing line means a rising price, and a falling line a falling price. A steeper line means a bigger change in one week, and a gentle line a small change. Week eight is highest, at fifteen, and week six is lowest, at eight. A price chart shows the past, and it does not show next week.
1
Look at the bars. In week 1 the price is coins.
2
Look at the bars. Which week has the lowest price?
Week 6Week 3Week 8
3
The highest price is coins, in week 8.
4
From week 5 to week 6 the price goes from 13 down to 8. How far does it fall?
385
5
From week 7 to week 8 the price goes from 11 up to 15. It climbs by .
6
The steepest fall on the chart is from week 5 to week 6.
TrueFalse
7
Week 1 to week 2 the price rises by 2, from 10 to 12. Week 7 to week 8 it rises by 4. Which line is steeper?
Week 1 to 2Week 7 to 8They are the same
Match, order and fix
8
Join each line to what it means.
1A line going up
2A line going down
3A flat line
4A steep line
5A gentle slope
Aa small change
Bthe price is falling
Cthe price stayed the same
Dthe price is rising
Ea big change in a week
9
Number these weeks from the lowest price to the highest.
Week 6
Week 8
Week 4
Week 1
10
Ben says: the line after week eight will keep climbing. Is Ben right?
YesNo
11
Circle each thing a price chart can tell you.
What the price was in week 4What the price will be in week 9Which week was the lowestHow much the price fell in week 6What to choose
12
Stretch: from the start to the end, the price went from 10 to 15. That is up .
13
In your own words, why can nobody draw the line after week eight?
14
Draw your own chart for four weeks with prices 5, 7, 6 and 9. Join the dots.
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