Wells of Knowledge Science Books in Order
Wells of Knowledge Science is an 8-book series by Robert E. Wells for ages 5–8, at a grades 3–6 reading level, with gentle content (HootRated intensity 1/5).
- Books
- 8
- By publication date
- Content intensity
- Gentle
- HootRated 1/5
Wells of Knowledge Science Reading Order
Series numbers aren't available for most Wells of Knowledge Science books, so they're listed by publication date (oldest first).
| # | Title | Reading Level | Ages | Content |
|---|---|---|---|---|
| 1 | Whats Smaller Than a Pygmy Shrew 1995 | Level 4-5 | 5-8 | Gentle |
| 2 | Can you count to a googol? 2000 | Level 3-4 | 5-8 | Gentle |
| 3 | How Do You Know What Time It Is? 2002 | Level 4-5 | 5-8 | Gentle |
| 4 | What's older than a giant tortoise? 2004 | Level 5-6 | 5-8 | Gentle |
| 5 | Did a dinosaur drink this water? 2006 | Level 5-6 | 5-8 | Gentle |
| 6 | Polar bear, why is your world melting? 2008 | Level 5-6 | 5-8 | Gentle |
| 7 | What's so special about planet Earth? 2009 | Level 4-5 | 5-8 | Gentle |
| 8 | Why do elephants need the sun? 2010 | Level 5-6 | 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. Wells of Knowledge Science (8 books by Robert E. Wells) lands at a grades 3–6 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 Wells of Knowledge Science Books
Whats Smaller Than a Pygmy Shrew
Robert E. Wells
Whats Smaller Than a Pygmy Shrew
Robert E. Wells
Can you count to a googol?
Robert E. Wells
Can you count to a googol?
Robert E. Wells
How Do You Know What Time It Is?
Robert E. Wells
How Do You Know What Time It Is?
Robert E. Wells
What's older than a giant tortoise?
Robert E. Wells
What's older than a giant tortoise?
Robert E. Wells
Did a dinosaur drink this water?
Robert E. Wells
Did a dinosaur drink this water?
Robert E. Wells
Polar bear, why is your world melting?
Robert E. Wells
Polar bear, why is your world melting?
Robert E. Wells
What's so special about planet Earth?
Robert E. Wells
What's so special about planet Earth?
Robert E. Wells
Why do elephants need the sun?
Robert E. Wells
Why do elephants need the sun?
Robert E. Wells
Series Like Wells of Knowledge Science: What to Read Next
Similar reading level, content intensity and themes.
- Living with the Dinosaurs by Melissa Raae Shofner 4 books · Grades 4–5 · gentle content
- Science Matters: Water Science by Christine Webster 6 books · Grades 4–5 · gentle to mild content
- Exploring Dinosaurs & Prehistoric Creatures; Exploring Dinosaurs by Susan Heinrichs Gray 6 books · Grade 5 · gentle content
- On My Own Science by Susan E. Goodman 3 books · Grades 3–4 · gentle content
- In Focus: Dinosaurs by Camilla De la Bédoyère 4 books · Grades 5–6 · gentle content
- Capstone High-Interest Books; Mummies by Charlotte Wilcox 4 books · Grades 5–6 · gentle content
Questions about the Wells of Knowledge Science series
- What reading level is the Wells of Knowledge Science series?
- Wells of Knowledge Science books are at a grades 3–6 reading level (average grade level 5), and HootRated recommends the series for ages 5–8. There are 8 books in the series.
- What order should I read the Wells of Knowledge Science books?
- Series numbers aren't available for most Wells of Knowledge Science books, so HootRated lists them by publication date: Whats Smaller Than a Pygmy Shrew (1995); Can you count to a googol? (2000); How Do You Know What Time It Is? (2002); What's older than a giant tortoise? (2004); Did a dinosaur drink this water? (2006); and 3 more.
- What age is the Wells of Knowledge Science series appropriate for?
- HootRated recommends Wells of Knowledge Science 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.