The Critical Thinking Co.™

This fun, mind-building 48-page book is made up of three types of puzzles that focus on addition and subtraction of whole numbers. These puzzles also sharpen students' critical thinking,...

This fun, mind-building 48-page book is made up of three types of puzzles that focus primarily on multiplication and division of whole numbers, but also include some fraction problems. As students...

This fun, mind-building 48-page book is made up of three types of puzzles that involve addition, subtraction, division, and multiplication as well as fractions and decimals. As students have fun...

This colorful, fun 224-page book develops critical thinking skills necessary for success in reading, writing, math, science, social studies, and standardized tests. It also teaches many academic...

This engaging 288-page book develops critical thinking skills necessary for success in reading, writing, math, science, social studies, and standardized tests in Grades 7-12+. The Building Thinking...

This colorful and engaging series improves academic performance in Reading, Writing, Math and Science and prepares students for a wide variety of cognitive tests commonly used for academic placement...

This colorful and engaging series improves academic performance in Reading, Writing, Math and Science and prepares students for a wide variety of cognitive tests commonly used for academic placement...

This colorful 32-page book offers a collection of fun, easy-to-use detective cases for Grades 3-12+. This book—unlike the later books in the series—includes some crime cases that involve simple maps...

This colorful 32-page book offers a collection of fun, easy-to-use detective cases for Grades 4-12+. Some cases may be more challenging for younger students, but teachers and parents can always...

This colorful 32-page book offers a collection of fun, easy-to-use detective cases for Grades 4-12+. Some cases may be more challenging for younger students, but teachers and parents can always...

This 144-page book is comprised of intriguing activity pages to wake up sleepy brains for the day's lessons. Each activity page takes about 5-15-minutes to solve and develops the most important...

This 136-page book is comprised of intriguing activity pages to wake up sleepy brains for the day's lessons. Each activity page takes about 5-15-minutes to solve and develops the most important...

This 136-page book is comprised of intriguing activity pages to wake up sleepy brains for the day's lessons. Each activity page takes about 5-15-minutes to solve and develops the most important...

Editor in Chief® Beginning 1 improves students' grammar, punctuation, spelling, capitalization, and attention to detail using a standards-based thinking approach rather than drill and practice. This...

This fun, highly-effective 152-page book teaches students in Grades 3-4 grammar, punctuation, spelling, capitalization, and critical reading in a standards-based thinking approach instead of the...

This fun, highly-effective 136-page book teaches students in Grades 4-5 grammar, punctuation, spelling, capitalization, and critical reading in a standards-based thinking approach instead of the...

This fun, highly-effective 160-page book teaches students in Grades 6-8 grammar, punctuation, spelling, capitalization, and critical reading in a standards-based thinking approach instead of the...

This fun, highly-effective 216-page book teaches students in Grades 9-12 grammar, punctuation, spelling, capitalization, and critical reading in a standards-based thinking approach instead of the...

This 128-page book uses topics and skills drawn from national math standards to prepare your students for advanced math courses and assessments that measure reasoning, reading comprehension, and...

This 56-page book contains several of our best-selling deductive thinking puzzles. It develops the logic, reading comprehension, and mental organization skills vital to achieving higher grades and...