Make the data
make sense.

Paper version · same eight questions

Interactive plotting and feedback need JavaScript. You can answer these questions on paper using the blank grids and 50-space circles. Allow about 30 minutes. All data are fictional practice examples.

1. Bridge results

The flat design held 6 coins, the arch 14, the folded bridge 22 and the tube 18. Record the four results with units.

1. Flat: value and unit ____________________
2. Arch: value and unit ____________________
3. Folded: value and unit ____________________
4. Tube: value and unit ____________________

2. Build the bridge results

Build a graph of the paper-bridge results. Start at zero and make all four bars match the table.

Bridge design	Coins held (coins)
Flat	6
Arch	14
Folded	22
Tube	18

1. Graph title ____________________
2. Horizontal (X) axis — Bridge design / Coins held (coins) ____________________
3. Vertical (Y) axis — Bridge design / Coins held (coins) ____________________
4. Value per small square ____________________
5. Flat bar height (coins) ____________________
6. Arch bar height (coins) ____________________
7. Folded bar height (coins) ____________________
8. Tube bar height (coins) ____________________

3. How many more?

How many more coins did the folded bridge hold than the flat bridge?

Bridge design	Coins held (coins)
Flat	6
Arch	14
Folded	22
Tube	18

1. Set up your calculation (self-check) ____________________
2. Answer with units ____________________

4. Repair the scale

A student labels equally spaced ticks 0, 5, 10, 20. Decide what needs repairing.

1. Which replacement makes every jump equal? — 0, 5, 10, 15 / 0, 5, 15, 20 / 0, 10, 15, 20 ____________________

5. Follow a seedling through time

A line graph follows change in order. Here, we measure the same seedling on four days.

Day	Height (cm)
0	4
1	8
2	12
3	12

1. Graph title ____________________
2. Horizontal (X) axis — Day / Height (cm) ____________________
3. Vertical (Y) axis — Day / Height (cm) ____________________
4. Value per x space ____________________
5. Value per y space ____________________
6. Point 1 x value ____________________
7. Point 1 y value ____________________
8. Point 2 x value ____________________
9. Point 2 y value ____________________
10. Point 3 x value ____________________
11. Point 3 y value ____________________
12. Point 4 x value ____________________
13. Point 4 y value ____________________
14. What should happen between the points? — Join neighboring points in table order / Leave the points separate ____________________
15. When did the measured height stay the same? — Day 0 to day 1 / Day 1 to day 2 / Day 2 to day 3 ____________________
16. How much taller was it on day 3 than on day 0? (cm) ____________________

6. One leaf. Two measurements.

Each row describes a different leaf. One dot keeps that leaf’s length and width together.

Length (cm)	Width (cm)
2	1
4	3
6	2
8	4

1. Graph title ____________________
2. Horizontal (X) axis — Length (cm) / Width (cm) ____________________
3. Vertical (Y) axis — Length (cm) / Width (cm) ____________________
4. Value per x space ____________________
5. Value per y space ____________________
6. Point 1 x value ____________________
7. Point 1 y value ____________________
8. Point 2 x value ____________________
9. Point 2 y value ____________________
10. Point 3 x value ____________________
11. Point 3 y value ____________________
12. Point 4 x value ____________________
13. Point 4 y value ____________________
14. What should happen between the points? — Join neighboring points in table order / Leave the points separate ____________________
15. What is the overall pattern in these four leaves? — Longer leaves tend to be wider, with an exception. / Every longer leaf is wider, without exception. / Longer leaves tend to be narrower. ____________________
16. How wide is the leaf that is 6 cm long? (cm) ____________________

7. Pair the parts: 100 becomes 50

Pair neighboring 1% parts. Now each space between dots is 2%. The circle and the data stay the same size. Count gaps, not dots.

Rock type	Count
Basalt	20
Granite	15
Sandstone	10
Marble	5

1. Graph title ____________________
2. Basalt (%) ____________________
3. Basalt · Ends at ____________________
4. Granite (%) ____________________
5. Granite · Ends at ____________________
6. Sandstone (%) ____________________
7. Sandstone · Ends at ____________________
8. Marble (%) ____________________
9. Marble · Ends at ____________________
10. How much of the whole does one space represent here? — 1% / 2% / 50% ____________________
11. How many spaces are needed for a 20% slice? (spaces) ____________________

8. A missing measurement

“Oak spent the most time reading.”

Group	Books read (books)
Cedar	15
Oak	25
Pine	20
Maple	10

1. Choose an answer — Supported / Contradicted / Cannot tell ____________________
2. Select the evidence you used (self-check) — Cedar: 15 books / Oak: 25 books / Pine: 20 books / Maple: 10 books / The graph does not measure the information needed. ____________________
3. Explain your verdict ____________________