Book Review: Critical Thinking Handbook 4th–6th Grades a Guide For Remodelling Lesson Plans in Language Arts, Social Studies, and Sciences Richard Paul, A.J.A. Sinker, Karen Jensen & Heidi Kreklau, Centre for Critical Thinking and Moral Critique 1987; Critical Thinking Handbook; K-3 a Guide For Remodelling Lesson Plans in Language Arts, Social Studies, and Sciences Richard Paul, A.J.A. Sinker, & Marla Charbonneau Centre for Critical Thinking and Moral Critique 1987