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The Critical Thinking Co.
The Critical Thinking Co. - Empower the Mind
The Critical Thinking Co. - Empower the Mind


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WIN a Free Book Bundle of your choice!

Enter our 6th & final giveaway of the year in celebration of our 60th anniversary! 5 Lucky Winners | Enter Now:
Sweepstakes ends 9/30/2018.
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WIN a Free Book Bundle of your choice! Enter our 5th giveaway of the year in celebration of our 60th anniversary!
3 Lucky Winners | Enter Now:
Sweepstakes ends 8/10/2018.
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Win a FREE eBook Bundle from! A $170 - $296 Value! 3 Lucky Winners. Giveaway ends 4/20/2018. Winners pick one multi-subject grade level eBook Bundle (Grades PreK-12+) of their choice!
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Win a free book bundle of your choice from! Grades PreK-12+ | A $170 - $296 Value! Includes Free Shipping within the United States!
Sweepstakes has ended.
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The Critical Thinking Co.™ offers hundreds of award-winning educational books & software that sharpen the mind as they teach standards-based reading, writing, mathematics, science, and history.
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Win a Free Software Bundle of Your Choice!
(Up to a $362 Value!) Downloadable Software Bundles Available for Grades PreK-12+ | 3 Lucky Winners. Refer your friends to receive more entries!
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Crypto Mind Benders®: Famous Quotations (Grades 3-12+)

This fun, thought provoking 48-page book of puzzles, develops mathematical reasoning and critical thinking skills that are vital to achieving academic and lifelong success. They're great for introducing students to encryption, algebraic thinking, and basic computer programming operations.

Each puzzle requires students to break a secret code so they can identify a hidden quotation. To break the code, students must apply logic and mathematical reasoning to 3-sets of clues. The challenge is getting all the information out of each clue! Once students break the code, they can solve the cryptogram by substituting the numbers with their corresponding code letters. This book familiarizes students with classic quotations from famous thinkers such as Albert Einstein, Voltaire, Socrates, and more!
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Mathematical Reasoning™ Level F (Grade 5)

Forget boring math lessons and dreaded drill sheets. This fun, colorful 448-page book uses engaging lessons with easy-to-follow explanations, examples, and charts to make fifth grade mathematical concepts easy to understand. It can be used as a textbook or a comprehensive workbook with your textbook to teach the math skills and concepts that students are expected to know in fifth grade—and several concepts normally taught in sixth grade. This book emphasizes problem-solving and computation to build for success in higher-level math and math assessments.

Every lesson is followed with a variety of fun, colorful activities to ensure concept mastery. The lessons and activities spiral slowly, allowing students to become comfortable with concepts, but also challenging them to continue building their problem-solving skills. This book teaches more than mathematical concepts; it teaches mathematical reasoning, so students learn to devise different strategies to solve a wide variety of math problems. It is written to the standards of the National Council of Teachers of Mathematics.


• Addends
• Addition
• Age
• Analyze Data
• Angles
• Area
• Bar Graph
• Calendar
• Capacity
• Characteristics
• Circle Graphs
• Coins
• Congruence
• Coordinates
• Count
• Data Analysis
• Data Collection
• Decimals
• Division
• Equations
• Equivalence
• Estimate
• Expanded Notation
• Fractions
• Graphs
• Inequalities
• Language
• Length
• Match
• Mean
• Median
• Mode • Money
• Multiplication
• Negative Numbers
• Number Lines
• Odd/Even
• Order
• Parallel
• Patterns
• Perimeter
• Perpendicular
• Place Value
• Prediction
• Prime/composite
• Probability
• Properties
• Real World Problems
• Reflection/Translation/Rotation
• Regrouping
• Rounding
• Rulers
• Shapes
• Subtraction
• Survey
• Symmetry
• Tables
• Temperature
• Time
• Variables
• Weight
• Whole Numbers
• Word Problems
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U.S. History Detective® Book 2 (Grades 8-12+)

What makes this 320-page book different from other American history book is the integration of critical thinking into the content lessons. The questions in this book require deeper analysis and frequently ask for supporting evidence from the lesson. This in-depth analysis produces greater understanding, which results in better grades and higher test scores. Over time, students who practice critical thinking learn to apply it throughout their education and lives. This book also develops reading comprehension and writing skills, and challenge students to learn new vocabulary.

This colorful book brings U.S. history to life! It is full of fascinating facts, pictures, and maps. It can be used as a stand-alone textbook, supplement to your textbook, or as a review course for older students. The vocabulary and content skills are based on common state social studies standards. This book has both primary and secondary source information. Each lesson provides a passage students must read, followed by a series of questions. Questions are multiple choice, short answer, or short essay questions. Students are frequently asked to identify sentence evidence from the lesson that best supports the answer. Sample answers are provided which identify key points for the essays. In addition, there are section review activities and some bonus activities.

In these books, students will:
• Supply supporting evidence for many of their answers
• Supply essay evidence to support their conclusions by drawing on specific information from the lesson
• Draw inferences and conclusions based on their evaluation of the evidence
• Distinguish between facts and opinions
• Analyze historical chronology to see history as a series of interrelated events
• Acquire new vocabulary
• Learn to interpret and draw information from geographical maps, political cartoons, and charts

U.S. History Detective® Book 2 focuses on the late 1800s to the 21st century. The lessons and activities in this book are organized around these time periods:
• The Gilded Age: 1870-1900
• Imperialism and Progressives: 1890s-1910s
• The Great War: 1914-1919
• The Roaring Twenties: 1920-1929
• The Great Depression: 1929-1939
• World War II: 1939-1945
• The 1950s
• The 1960s
• The 1970s
• The 1980s
• The 1990s
• Bridge to the 21st Century
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