13 books
Understanding China
Solving Logic Problems, Years 4-7
Debating in the Middle Grades
Solving Logic Problems Bk 1
What If?
Word Roots & Affixes Gr.6-8
Word Roots & Affixes Gr. 4-5
Making Sense of Economics
Working with Analogies
Working with Analogies Grades 2-3
Working with Analogies Gr 4-5
Faces of Man No. 2
Creative Problem Solving