Raven spreads three cards on the Signal Desk. "Rocket, your garden argument has reasons. Now show me the evidence."
Rocket reads his cards. "The garden needs a shade tent because the seedlings wilt by noon. Also, I like tents."
"What do you notice about the second one?" Raven asks.
Rocket groans. "It is about me, not the garden. It does not fit."
Nova drifts over the corkboard, where last week's Signal is pinned. "Your own paper has a garden report," she says.
Rocket grabs it. "The gardeners moved the seedling trays under the porch roof twice last week. That is evidence!"
"Evidence that fits the reason," Raven says. "Pin it under the right card."
Rocket pins it, then writes a complete sentence beneath it. Fast, but complete.
A reason tells why. Evidence shows the reason is true. Evidence can be an example, a quotation from someone, or a detail from a text.
Relevant evidence fits the reason it sits under. Irrelevant evidence is true but about something else. "I like tents" is true and useless.
Raven thinks aloud: "The reason is that seedlings wilt by noon. The Signal report says gardeners moved the trays into shade twice. That detail fits the reason, so it is relevant."
In this course, evidence comes from the text you are given, such as this week's Signal, or from something you saw yourself.
Every sentence in an argument needs a subject and a verb and must make sense alone. "Because the seedlings wilt." is a fragment. "The garden needs shade because the seedlings wilt." is complete.
Rocket writes fast and fixes later. His fix: read each sentence alone and ask, "Does this stand up by itself?"
| Complete sentence or fragment? | Complete? |
|---|---|
| The seedlings wilt by noon on sunny days. | ? |
| Because the beds are too bright by ten. | ? |
| A tent with open sides over the seedling beds. | ? |
| The garden gives the block its greenest corner. | ? |
| Carrying trays back and forth every sunny morning. | ? |
Reasons with evidence are hard to doubt. Tomorrow, in Writing Lab, we give the other side a fair hearing and draft the whole argument.