Science Series (Books 1–7 | Grades 1–8) A modern, atoms-first path through chemistry, biology, physics, geology, and astronomy—starting with atoms and molecules, then building year by year.
Digital Teaching Dashboards (1-Year Access): Student + Teacher digital textbooks, printable student materials, teacher support, and everything organized in one place
Level Readers (Grades K–2) Leveled science readers that build early literacy and science vocabulary before the Science Series.
Whether you choose print or digital, every RS4K product is built on the same promise: atoms-first science with authentic, atomic–molecular, ontologically accurate explanations, correct concepts from the start, a logical progression, and confidence-building learning for every student.
