Smithsonian Little Explorer; Little Scientist Books in Order
Smithsonian Little Explorer; Little Scientist is a 4-book series by Megan Cooley Peterson for ages 5–8, at a grades 3–4 reading level, with gentle content (HootRated intensity 1/5).
- Books
- 4
- By publication date
- Content intensity
- Gentle
- HootRated 1/5
Smithsonian Little Explorer; Little Scientist Reading Order
Series numbers aren't available for most Smithsonian Little Explorer; Little Scientist books, so they're listed by publication date (oldest first).
| # | Title | Reading Level | Ages | Content |
|---|---|---|---|---|
| 1 | Coral Reefs 2013 | Level 3-4 | 5-8 | Gentle |
| 2 | Dogs 2014 · Martha E. H. Rustad | Level 3-4 | 5-8 | Gentle |
| 3 | Sharks 2014 | Level 3-4 | 5-8 | Gentle |
| 4 | Snakes 2014 · Martha E. H. Rustad | Level 3-4 | 5-8 | 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. Smithsonian Little Explorer; Little Scientist (4 books by Megan Cooley Peterson) lands at a grades 3–4 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 Smithsonian Little Explorer; Little Scientist Books
Series Like Smithsonian Little Explorer; Little Scientist: What to Read Next
Similar reading level, content intensity and themes.
- Little Entomologist 4D; Smithsonian Little Explorer by Megan Cooley Peterson 7 books · Grades 3–4 · gentle content
- Smithsonian Little Explorer; Little Physicist by Megan Cooley Peterson 4 books · Grades 3–4 · gentle content
- Little Scientist; Smithsonian Little Explorer by Martha E. H. Rustad 4 books · Grades 3–4 · gentle content
- Transportation Explorer by Heather E. Schwartz 3 books · Grades 3–4 · gentle content
- Crabtree Connections by Angela Royston 3 books · Grades 2–5 · gentle content
- Meet the Dinosaurs by Don Lessem 9 books · Grades 3–4 · gentle content
Questions about the Smithsonian Little Explorer; Little Scientist series
- What reading level is the Smithsonian Little Explorer; Little Scientist series?
- Smithsonian Little Explorer; Little Scientist books are at a grades 3–4 reading level (average grade level 3.6), and HootRated recommends the series for ages 5–8. There are 4 books in the series.
- What order should I read the Smithsonian Little Explorer; Little Scientist books?
- Series numbers aren't available for most Smithsonian Little Explorer; Little Scientist books, so HootRated lists them by publication date: Coral Reefs (2013); Dogs (2014); Sharks (2014); Snakes (2014).
- What age is the Smithsonian Little Explorer; Little Scientist series appropriate for?
- HootRated recommends Smithsonian Little Explorer; Little Scientist for ages 5–8. 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.