Primarily Logic - Grades 2-4 Author:Judy Leimbach, Dean Crawford (Illustrator), Pat Crawford (Illustrator) Introduce younger students to logical thinking with this attractive workbook. Reproducible worksheets and group lessons provide practice in relationships, analogies, thinking logically using "all" and "no" statements, syllogisms, and deductive reasoning. Logical thinking is both enjoyable and challenging for students as they ... more »build a sound foundation for further instruction in critical thinking. Grades 2-4.« less