Grades K & up. Instant inquiry-based centers -- just add your own supplies! Hands-on activities move students through the 3 stages of Scaffolded Inquiry -- Directed, Guided, Full. Aligns with National Science Education Standards. Set includes 72-page Teacher's Guide with step-by-step lesson plans and blackline masters, and 16-page, double-sided Activity Center Book (for students) with photo illustrations and spiral-bound easel format. For groups of 2 - 4 students.