These fun-filled units teach important scientific facts and concepts and present opportunities to practice crucial critical-and creative-thinking skills. A variety of activities are included: creative writing, experimenting, logic puzzles, cause and effect, research, math, analyzing, evaluating, and more. A fun What's the Question? game culminates each unit to reinforce the concepts learned.

Also included in each is a crossword puzzle, which may be used for evaluation or just for fun. Answers and background information are provided. 48 pages each. Grades 4-8.

Download the Table of Contents for Ecology here, for Our Everchanging Earth here, for The Human Body here and for Our Solar System here.

SPECIAL SET PRICE: If purchased individually, these books would cost $43.80 .