Lizzy the Lizard tips back her sun hat and opens her notebook.
"I counted the bugs in the meadow," she says.
"There were so many that my graph ran off the page!"
Bennie the Bear looks at her long rows of pictures.
"Try a key," he says. "Let one star stand for 5 bugs."
Lizzy grins. "Then 30 ants only need 6 stars!"
A picture graph uses pictures to show data.
In a scaled picture graph, the key says what one picture means.
In Lizzy's graph, each star stands for 5 bugs.
| Bug | Count (each ★ is 5) |
|---|---|
| Ants | ★ ★ ★ ★ ★ ★ |
| Bees | ★ ★ ★ |
| Beetles | ★ ★ ★ ★ ★ |
| Snails | ★ ★ |
The ants have 6 stars. Count by fives: 5, 10, 15, 20, 25, 30.
So Lizzy saw 30 ants. That is 6 × 5 = 30.
Bennie asked friends to vote for a favorite fruit. Each star is 2 votes.
| Fruit | Count (each ★ is 2) |
|---|---|
| Apples | ★ ★ ★ ★ |
| Pears | ★ ★ ★ |
| Plums | ★ ★ ★ ★ ★ ★ |
| Peaches | ★ ★ |
| Sentence | True or false? |
|---|---|
| The key tells what one picture stands for. | ? |
| 6 × 5 = 30 | ? |
| In the fruit graph, 3 stars stand for 3 votes. | ? |
| 15 + 10 = 30 | ? |
Great graphing! Tomorrow Lizzy shows us scaled bar graphs.