The Critical Thinking Co. publishes workbooks and software that develop reasoning, logic, and analytical skills. Their products span math, reading, science, and history, but the unifying thread is that every exercise requires students to think rather than just recall information.

Their most popular products include Mathematical Reasoning (a math supplement emphasizing problem-solving), Building Thinking Skills (visual and verbal reasoning), Mind Benders (logic puzzles), and Editor in Chief (language arts through error-finding). Each workbook is self-contained and requires minimal parent involvement.

At a Glance

What to Know

The company has been publishing since 1958, and the materials have a proven track record in both homeschool and gifted education settings. The workbooks are well-designed with clear instructions, progressive difficulty, and answer keys included.

Critical Thinking Co. products are secular and work as supplements alongside any primary curriculum. They fill the gap that many programs leave: teaching students how to think, not just what to know. For gifted students who breeze through grade-level work, these workbooks provide the intellectual challenge they crave. For struggling students, the visual reasoning exercises can build cognitive skills that transfer to academic improvement across subjects.