Books by Fred Bortz
4 books by Fred Bortz, rated for reading level and content intensity.
Fred Bortz has 3 rated books in HootRated's catalog spanning Grade 10 reading level. The typical Fred Bortz book lands at Grade 10, with average content intensity 1/5. Most Fred Bortz titles fall within the Library of Subatomic Particles series.
Reading level alone doesn't tell parents whether a Fred Bortz book is right for a child. 100% of Fred Bortz's rated titles are at Gentle or Mild intensity — appropriate for sensitive readers or kids reading ahead of their emotional readiness. 0% are rated Intense or Very Intense. The intensity badges below (green → red) help you match books to your child's emotional readiness, not just their reading ability. See our methodology for how we rate.
The Electron (The Library of Subatomic Particles)
Fred Bortz
The Electron (The Library of Subatomic Particles)
Fred Bortz
The Photon (The Library of Subatomic Particles)
Fred Bortz
The Photon (The Library of Subatomic Particles)
Fred Bortz
The Quark (The Library of Subatomic Particles)
Fred Bortz
The Quark (The Library of Subatomic Particles)
Fred Bortz
Laws of Genetics and Gregor Mendel
Fred Bortz
Laws of Genetics and Gregor Mendel
Fred Bortz
Questions about Fred Bortz's books
- What reading level are Fred Bortz's books?
- Fred Bortz's rated books range from Grade 10, with the typical book at Grade 10. Each title has a separate content intensity score so parents can choose by emotional readiness, not just text difficulty.
- Are Fred Bortz's books appropriate for sensitive readers?
- 3 of Fred Bortz's 3 rated books (100%) are at Gentle or Mild intensity — safe for sensitive readers. 0 (0%) are rated Intense or Very Intense. Average intensity: 1/5.
- What age are Fred Bortz's books appropriate for?
- Fred Bortz's rated books target Ages 12+. HootRated rates each book on reading level and content intensity — match both dimensions, not just one.