
Science Literacy Bundle 2: Continue Building with Accurate Words
The Next Step in Scientific Literacy
Introduce the world to young learners the right way: with accurate words from the very start. This curated set of eight Lexile-scored readers is designed on the same powerful principle as Bundle 1: we must use ontologically correct vocabulary. By progressing to more advanced terms, we build a durable mental framework that prevents future confusion and reinforces a correct, atomic foundation for all scientific learning.
Build on a Strong Foundation
Following the essential vocabulary in Bundle 1, this set introduces the next layer of precise scientific language (Lexile 350L–430L). Each reader continues the practice of pairing vibrant visuals with exact explanations, ensuring young thinkers develop fluency in the authentic language of science.
What's in the Bundle: Eight Readers to Deepen Understanding
Each softcover, 24-page, full-color book is a stepping stone to scientific fluency.
-
Sea Jellies (350L): Explore the anatomy, life cycles, and ecological roles of these fascinating ocean drifters.
-
Sponges (370L): Discover the simple biology of sponges and their important function in marine ecosystems.
-
What is Physics? (370L): Get an accurate introduction to the study of matter, energy, and the forces that govern motion.
-
What is Chemistry? (410L): Uncover the principles of atoms, molecules, and reactions that explain the material world.
-
Astronomy (410L): Journey from telescopes and our solar system to the search for habitable worlds, using correct astronomical terms.
-
Energy (420L): Investigate the different forms of energy, its transfers, and how it powers everything in our universe.
-
Linear Motion (420L): Understand the concepts of speed, velocity, and acceleration in straight-line motion.
-
Proteins (430L): Learn about these essential biomolecules, their structure, and their critical roles in the body's functions.
Designed for Growing Readers & Thinkers
-
Sequenced Literacy Support: Carefully leveled texts build reading stamina and comprehension alongside scientific knowledge.
-
Interdisciplinary Exposure: Introduces the core disciplines of science with clarity, showing how physics, chemistry, and biology are distinct yet connected.
-
Promotes Independent Inquiry: Clear explanations and real-world examples encourage readers to ask informed questions and seek evidence-based answers.
The Perfect Next Step For:
-
Students who have completed Science Literacy Bundle 1 or are ready for more advanced texts.
-
Building a robust home library that grows with your child's curiosity and reading level.
-
Providing structured, nonfiction reading practice that reinforces core STEM vocabulary and concepts.
Want Digital Access for Your Tablet?
This collection is also available as the Digital Reader Library: Level 2 (18-Month Access), providing flexible, online reading through our platform.
Start with the right map. Continue the journey with the right words.
The Next Step in Scientific Literacy
Introduce the world to young learners the right way: with accurate words from the very start. This curated set of eight Lexile-scored readers is designed on the same powerful principle as Bundle 1: we must use ontologically correct vocabulary.
Build on a Strong Foundation
Following the essential vocabulary in Bundle 1, this set introduces the next layer of precise scientific language (Lexile 350L–430L).
Each reader continues the practice of pairing vibrant visuals with exact explanations, ensuring young thinkers develop fluency in the authentic language of science.
By progressing to more advanced terms, we build a durable mental framework that prevents future confusion and reinforces a correct, atomic foundation for all scientific learning.
Eight Readers to Deepen Understanding
Each softcover, 24-page, full-color book is a stepping stone to scientific fluency. Lexile range: 350L–430L.
Sea Jellies
350LExplore the anatomy, life cycles, and ecological roles of these fascinating ocean drifters.
Sponges
370LDiscover the simple biology of sponges and their important function in marine ecosystems.
What is Physics?
370LGet an accurate introduction to the study of matter, energy, and the forces that govern motion.
What is Chemistry?
410LUncover the principles of atoms, molecules, and reactions that explain the material world.
Astronomy
410LJourney from telescopes and our solar system to the search for habitable worlds, using correct astronomical terms.
Energy
420LInvestigate the different forms of energy, its transfers, and how it powers everything in our universe.
Linear Motion
420LUnderstand the concepts of speed, velocity, and acceleration in straight-line motion.
Proteins
430LLearn about these essential biomolecules, their structure, and their critical roles in the body’s functions.
Sequenced Literacy Support
Carefully leveled texts build reading stamina and comprehension alongside scientific knowledge.
Interdisciplinary Exposure
Introduces the core disciplines of science with clarity, showing how physics, chemistry, and biology are distinct yet connected.
Promotes Independent Inquiry
Clear explanations and real-world examples encourage readers to ask informed questions and seek evidence-based answers.
The Perfect Next Step For
Want Digital Access for Your Tablet? This collection is also available as the Digital Reader Library: Level 2 (1-Year Access), providing flexible, online reading through our platform.
Science Readers Built for Independent Learning
Each reader is a short, focused booklet that explores one science topic. Readers are organized by Lexile® level so students read at the right difficulty.
Leveled by Lexile®
Every reader has a measured Lexile level, making it easy to match reading difficulty to your student’s ability.
- Range from 200L to 580L
- Progress through levels naturally
- Builds reading confidence
- Science vocabulary in context
All Five Disciplines
Readers span chemistry, biology, physics, geology, and astronomy—plus exercise science.
- Reinforces textbook concepts
- Explores topics in depth
- Cross-disciplinary connections
- Real-world science applications
Pairs with the Textbooks
Designed to complement RS4K Science Books, reinforcing concepts through independent reading.
- Extends textbook chapters
- Deepens understanding
- Great for extra practice
- Works standalone too
Trusted by Families & Educators
My kids love the science readers! They pick them up voluntarily, which never happens with textbooks. The Lexile leveling makes it easy to find the right fit.
These readers bridge the gap between the textbook and independent learning beautifully. My students use them as supplemental reading and their science vocabulary has improved dramatically.
Best science curriculum out there! Just wanted you to know how much I’ve appreciated teaching my kids from your materials.
Browse the Reader Library
Flip through sample readers online to see the quality, reading level, and subject coverage before purchasing.
BROWSE READER LIBRARY