My Science Library, 4-5 Books in Order
3 books by Julie K. Lundgren. Reading level: Grades 5.1–6.8. Middle Grades (Ages 9–12).
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. My Science Library, 4-5 (3 books by Julie K. Lundgren) lands at reading level Grades 5.1–6.8, with average content intensity 1/5. Intensity stays consistent across the series — a kid who can handle the first book can generally handle the rest.
The reading-order table below lists every book with per-volume reading level and intensity badges 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.
Content Intensity Across the Series
ConsistentContent stays at a steady intensity level throughout the series.
My Science Library, 4-5 Reading Order
| # | Title | Reading Level | Content |
|---|---|---|---|
| 1 | Eating and the digestive system Julie K. Lundgren | Level 5-6 | Gentle |
| 2 | How Do Humans Depend on Earth? Julie K. Lundgren | Level 6-7 | Gentle |
| 3 | Plants As Food, Fuel, and Medicine Julie K. Lundgren | Level 6-7 | Gentle |
All My Science Library, 4-5 Books
Eating and the digestive system
Julie K. Lundgren
Eating and the digestive system
Julie K. Lundgren
How Do Humans Depend on Earth?
Julie K. Lundgren
How Do Humans Depend on Earth?
Julie K. Lundgren
Plants As Food, Fuel, and Medicine
Julie K. Lundgren
Plants As Food, Fuel, and Medicine
Julie K. Lundgren
Questions about the My Science Library, 4-5 series
- What reading level is the My Science Library, 4-5 series?
- The My Science Library, 4-5 series by Julie K. Lundgren is at a Grades 5.1–6.8 reading level (average Grade 6.1). Intended for Middle Grades (Ages 9–12). There are 3 books in the series.
- What order should I read the My Science Library, 4-5 books?
- The reading-order table above lists all 3 books with per-volume reading level and intensity ratings. Start with book 1 and read in publication order unless the table indicates a different recommended order for newer readers.
- What age is the My Science Library, 4-5 series appropriate for?
- The My Science Library, 4-5 series is recommended for Middle Grades (Ages 9–12). The average content intensity is 1/5. Check the intensity trajectory above to see whether content gets heavier across the series — if it does, sensitive readers may want to stop earlier in the run.