Part A — Line Graphs
A line graph shows how something changes over time. The steeper the line between two points, the faster the change; a line going down shows a decrease.
1
Read the graph. What was the maximum temperature on Thursday? On Monday?
Thursday: Monday:
2
Which day was the hottest, and which was the coolest?
3
Between which two consecutive days did the temperature rise the most? By how many degrees?
4
Find the difference between the hottest and the coolest day.
Answer:
5
On how many days was the maximum temperature above 25°C?
Answer:
6
Reasoning. Describe the overall trend across the week. Would this single week be enough to predict next week’s temperatures? Explain.
Part B — Pictographs & Column Graphs
Part B — Pictographs & Column Graphs
A pictograph uses a symbol to stand for a number of items, so you must read the key. A column graph shows amounts as bar heights, and a side-by-side column graph compares two groups at once.
1
Use the pictograph. How many books did each year level read this month?
Year 4: Year 5: Year 6:
2
Year 5’s row shows a half star. Explain what the half star means and why it is needed.
3
How many books were read altogether by the three year levels? How many more did Year 6 read than Year 4?
4
Now use the side-by-side column graph below. Which sport is the most popular with boys? Which is most popular with girls?
5
For one sport of your choice, read off the number of boys and girls and find the total who chose it.
6
Reasoning. A pictograph uses a symbol for several items (here, one star = 2 books). Give one advantage and one disadvantage of a pictograph compared with a column graph.