This collection of blackline masters will help your students develop three important elements of critical thinking: the ability to recognize patterns, the ability to use visual imagery, and the ability to reason logically - universal skills that help students solve problems in almost any discipline. Rated at three levels of difficulty for students in grades 7-12, the activities provide experience with: patterns with numbers, shapes, and letters ; ordering by size ; comparing shapes and designs ; symmetry ; plotting pictures on graph paper ; logic word problems ; number sentences ; Venn diagrams ; other areas that develop critical thinking skills. Use these reproducible activities as worksheets for individual student work or as overhead transparencies to give your class a group challenge. -- from back cover.