A discussion with Leslie revealed that sometimes students don't think things through, but just take what the textbook says as "Gospel Truth":
- Me: Which planets do you think are the hottest?
- Leslie: Um… (looks at the diagram in the mini-book) Mercury…and Venus.
- Me: Why do you think they’re the hottest?
- Leslie: I think because…it said…in our science book.
- Me: Is there anything from that diagram that makes you think that they would be the hottest?
- Leslie: Because they’re closest to the sun.
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| Calvin shows some strong critical thinking in answering this question. |
A discussion with Kara and Caleb exposed some misconceptions about why some planets are warmer than others:
- Me: Which planets do you think are the hottest?
- Kara: Jupiter.
- Me: Jupiter? Why do you think Jupiter is the hottest?
- Kara: Because it’s big and it has gas.
- Me: What about you, Caleb?
- Caleb: I don’t know. (shrugs)
- Me: Look at that diagram. How can the diagram help you see which planets are the warmest? (both students look at their mini-books) Like, do you think Venus…is warmer or colder than Jupiter?
- Caleb: I don’t know. (looks at page)
- Me: Well, what do you think?
- Caleb: Warmer?
- Me: Why do you think it might be warmer on Venus than on Jupiter?
- Caleb: (scratches his chin and looks at his book)
- Me: What part of the solar system gives us heat?
- Kara: The sun.
- Me: So what planets do you think are the hottest?
- Kara: The sun?
- Me: The sun’s not a planet, remember? What planet do you think would be the hottest?
- Kara: Venus.
- Me: Venus? Why?
- Kara: Because it’s closer to the sun than all of the other planets.
- Me: Is there another planet closer to the sun than Venus?
- Caleb: Mars?
- Me: Mars is farther away (pointing to diagram).
- Caleb: Mmm…Mercury?
- Me: Mercury. So, Mercury and Venus are probably the hottest because…they are…
- Kara: Closer to the sun.
- Me: Right. Now being a big planet doesn’t have anything to do with how work or how cold it is…it’s just the size of it, okay?
| After reading and completing their mini-books, my students used their Science textbooks to correctly color the planets. |
Finally, I had a great conversation with Melanie and Evan, who showed great critical thinking skills to think through their original misconceptions:
- Melanie: We don’t really know why Neptune and Uranus would be, um, so hot, but I remember reading it in one of the books we read. But at first we said they’re so far out and if they’re so far out, then they would be colder.
- Me: Mm-hm… So if they’re really far awayfrom the sun, they would be colder, right?
- Melanie:(nods)
- Me: So if that’s true, the probably wouldn’t be the hottest planets, would they?
- Melanie: (shakes head) No.
- Me: So which ones would be the hottest?
- Evan: I think the ones that would be it were Venus and Mar- (sounding it out) Mercury.
- Me: And why do you think that they’re the hottest, Evan?
- Evan: Because they’re so close to the sun.
- Me: I think that's good logic. That's good thinking! Good job!
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| Evan's mini-book and the infamous question about the hottest planets... |
Using the mini-books was a really helpful activity, and it exposed some misconceptions my students had about the solar system. I plan to try to use others with this unit to help strengthen my students' reading skills and content knowledge.

