Raven deals out eight photo cards. "Let's test the tree on every card," she says.
Rocket is sure it will get all eight right. "My tree is perfect!"
"What do you notice about card 8?" Raven asks. "It is a metal ruler."
Nova blinks slowly. "Follow the questions exactly," she hints. "Do not skip ahead."
You will make eight photo cards from the features table.
Then you will run each card through the crew's decision tree.
You will count how many the tree sorts right.
| Card | What it shows | Has a handle? | Has leaves? | True label |
|---|---|---|---|---|
| 1 | a hammer | yes | no | tool |
| 2 | a fern | no | yes | plant |
| 3 | a gray lumpy rock | no | no | rock |
| 4 | a screwdriver | yes | no | tool |
| 5 | a green sprout | no | yes | plant |
| 6 | a brown pebble | no | no | rock |
| 7 | a leafy vine | no | yes | plant |
| 8 | a metal ruler | no | no | tool |
| Card | Label the tree picked | True label | Match? (yes or no) |
|---|---|---|---|
| 1 | tool | ||
| 2 | plant | ||
| 3 | rock | ||
| 4 | tool | ||
| 5 | plant | ||
| 6 | rock | ||
| 7 | plant | ||
| 8 | tool |
| What we learned | True or false? |
|---|---|
| The tree sorted most cards right. | ? |
| Card 8 was a tool, but the tree said rock. | ? |
| The tree made the mistake on purpose. | ? |
| A mistake shows where the model needs work. | ? |
Fantastic testing! Rocket's tree was not perfect, and that is great news. Now we know what to fix.