Let's Rock! (Crabree) Books in Order
Let's Rock! (Crabree) is a 4-book series by Molly Aloian for ages 9–12, at a grades 5–6 reading level, with gentle content (HootRated intensity 1/5).
- Books
- 4
- By publication date
- Content intensity
- Gentle
- HootRated 1/5
Let's Rock! (Crabree) Reading Order
Series numbers aren't available for most Let's Rock! (Crabree) books, so they're listed by publication date (oldest first).
| # | Title | Reading Level | Ages | Content |
|---|---|---|---|---|
| 1 | What are igneous rocks? 2010 | Level 5-6 | 9-12 | Gentle |
| 2 | What are metamorphic rocks? 2011 | Level 6-7 | 9-12 | Gentle |
| 3 | What are crystals? 2012 | Level 6-7 | 9-12 | Gentle |
| 4 | What are minerals? 2012 · Natalie Hyde | Level 6-7 | 9-12 | Gentle |
Content Intensity Across the Series
ConsistentContent stays at a steady intensity level throughout the series.
Series books grow with readers — but that's also the trap. Most series start at one reading level and one content intensity and drift upward over the course of the run. Let's Rock! (Crabree) (4 books by Molly Aloian) lands at a grades 5–6 reading level, with average content intensity 1/5. Intensity stays consistent across the series, so a reader who can handle the first book can generally handle the rest.
The reading-order table above lists every book with per-volume reading level, age and intensity ratings so you can spot any escalation before it catches your reader off guard. For a deeper dive into how we score text difficulty vs. emotional weight separately — and why series readers especially benefit from that split — see our methodology page.
All Let's Rock! (Crabree) Books
What are igneous rocks?
Molly Aloian
What are igneous rocks?
Molly Aloian
What are metamorphic rocks?
Molly Aloian
What are metamorphic rocks?
Molly Aloian
What are crystals?
Molly Aloian
What are crystals?
Molly Aloian
What are minerals?
Natalie Hyde
What are minerals?
Natalie Hyde
Series Like Let's Rock! (Crabree): What to Read Next
Similar reading level, content intensity and themes.
- Birdbooks by George K. Peck 7 books · Grades 5–6 · gentle content
- Extreme Machines (Rosen/PowerKids); PowerKids Press by Ian F. Mahaney 5 books · Grades 5–6 · gentle content
- Discovering Dinosaurs (Smart Apple Media) by Sandy Fritz 5 books · Grades 5–6 · gentle content
- It's Nature! by Sneed B. Collard 5 books · Grades 6–7 · gentle content
- Rocks and Minerals (ABDO); Core Library by Jenny Fretland VanVoorst 5 books · Grades 5–6 · gentle content
- Insects and Spiders by Shane F. McEvey 5 books · Grades 5–6 · gentle content
Questions about the Let's Rock! (Crabree) series
- What reading level is the Let's Rock! (Crabree) series?
- Let's Rock! (Crabree) books are at a grades 5–6 reading level (average grade level 6.1), and HootRated recommends the series for ages 9–12. There are 4 books in the series.
- What order should I read the Let's Rock! (Crabree) books?
- Series numbers aren't available for most Let's Rock! (Crabree) books, so HootRated lists them by publication date: What are igneous rocks? (2010); What are metamorphic rocks? (2011); What are crystals? (2012); What are minerals? (2012).
- What age is the Let's Rock! (Crabree) series appropriate for?
- HootRated recommends Let's Rock! (Crabree) for ages 9–12. Content is gentle (HootRated intensity 1/5). Intensity stays consistent across the series, so a reader who can handle the first book can generally handle the rest.