Mathematical Thinking: Multilevel Math Practice to Improve Strategic Thinking and Test-Taking Skills. ea. paper. 112 pp., Level A (Gr. 1-2); Level B (Gr. 1-2); Level C (Gr. 3-4); Level D (Gr. 3-4); Level E (Gr. 5-6); Level F (Gr. 5-6)by Trisha Callella