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Algebra I & II
Gr. 7-12+
Algebra Magic Tricks
Gr. 2-12+
Algebra Word Problems
Gr. 7-12+
Balance Benders
Gr. 2-12+
Balance Math & More!
Gr. 2-12+
Basics of Critical Thinking
Gr. 4-7
Brain Stretchers
Gr. 5-12+
Building Thinking Skills
Gr. Toddler-12+
Building Writing Skills
Gr. 3-7
Bundles - Critical Thinking
Gr. PreK-9
Bundles - Language Arts
Gr. K-8
Bundles - Mathematics
Gr. PreK-9
Bundles - Multi-Subject Curriculum
Gr. PreK-12+
Bundles - Test Prep
Gr. Toddler-12+
Can You Find Me?
Gr. PreK-1
Complete the Picture Math
Gr. 1-3
Cornell Critical Thinking Tests
Gr. 5-12+
Cranium Crackers
Gr. 3-12+
Creative Problem Solving
Gr. PreK-2
Critical Thinking Activities to Improve Writing
Gr. 4-12+
Critical Thinking Coloring
Gr. PreK-2
Critical Thinking Detective
Gr. 3-12+
Critical Thinking Tests
Gr. PreK-6
Critical Thinking for Reading Comprehension
Gr. 1-5
Critical Thinking in United States History
Gr. 6-12+
CrossNumber Math Puzzles
Gr. 4-10
Crypt-O-Words
Gr. 2-7
Crypto Mind Benders
Gr. 3-12+
Daily Mind Builders
Gr. 5-12+
Dare to Compare Math
Gr. 2-7
Developing Critical Thinking through Science
Gr. 1-8
Dr. DooRiddles
Gr. PreK-12+
Dr. Funster's
Gr. 2-12+
Editor in Chief
Gr. 2-12+
Fun-Time Phonics!
Gr. PreK-2
Half 'n Half Animals
Gr. K-4
Hands-On Thinking Skills
Gr. K-1
Inference Jones
Gr. 1-6
James Madison
Gr. 10-12+
Jumbles
Gr. 3-5
Language Mechanic
Gr. 4-7
Language Smarts
Gr. 1-4
Mastering Logic & Math Problem Solving
Gr. 6-9
Math Analogies
Gr. K-9
Math Detective
Gr. 3-8
Math Games
Gr. 3-8
Math Mind Benders
Gr. 5-12+
Math Ties
Gr. 4-8
Math Word Problems
Gr. 4-10
Mathematical Reasoning
Gr. Toddler-11
Middle School Science
Gr. 6-8
Mind Benders
Gr. PreK-12+
Mind Building Math
Gr. K-1
Mind Building Reading
Gr. K-1
Novel Thinking
Gr. 3-6
OLSAT® Test Prep
Gr. PreK-K
Organizing Thinking
Gr. 2-8
Pattern Explorer
Gr. 3-9
Practical Critical Thinking
Gr. 8-12+
Punctuation Puzzler
Gr. 3-8
Reading Detective
Gr. 3-12+
Red Herring Mysteries
Gr. 4-12+
Red Herrings Science Mysteries
Gr. 4-9
Science Detective
Gr. 3-6
Science Mind Benders
Gr. PreK-3
Science Vocabulary Crossword Puzzles
Gr. 4-6
Sciencewise
Gr. 4-12+
Scratch Your Brain
Gr. 2-12+
Sentence Diagramming
Gr. 3-12+
Smarty Pants Puzzles
Gr. 3-12+
Snailopolis
Gr. K-4
Something's Fishy at Lake Iwannafisha
Gr. 5-9
Teaching Technology
Gr. 3-12+
Tell Me a Story
Gr. PreK-1
Think Analogies
Gr. 3-12+
Think and Write
Gr. 3-8
Think-A-Grams
Gr. 4-12+
Thinking About Time
Gr. 3-6
Thinking Connections
Gr. 4-12+
Thinking Directionally
Gr. 2-6
Thinking Skills & Key Concepts
Gr. PreK-2
Thinking Skills for Tests
Gr. PreK-5
U.S. History Detective
Gr. 8-12+
Understanding Fractions
Gr. 2-6
Visual Perceptual Skill Building
Gr. PreK-3
Vocabulary Riddles
Gr. 4-8
Vocabulary Smarts
Gr. 2-5
Vocabulary Virtuoso
Gr. 2-12+
What Would You Do?
Gr. 2-12+
Who Is This Kid? Colleges Want to Know!
Gr. 9-12+
Word Explorer
Gr. 4-8
Word Roots
Gr. 3-12+
World History Detective
Gr. 6-12+
Writing Detective
Gr. 3-6
You Decide!
Gr. 6-12+

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"My children love Balance Benders™; in fact, I would not be exaggerating if I said they were addicted to them. I sincerely thank you for a product that makes what can be extremely difficult skills to master an absolute blast for my children."
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"The wealth of game-like activities and colorful illustrations in Fun-Time Phonics!™ make it feel like play rather than work, allowing kids to enjoy themselves while acquiring the skills and confidence that lead to fluency."
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"Reading Detective® is the best reading comprehension teaching material I have found! I love that your material teaches the student HOW to comprehend, and how to look for the answers in the text. I love your evidence-seeking approach!"
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"I love the Language Smarts™ curriculum. My son enjoys it very much and can follow the simple instructions with ease. Thanks to The Critical Thinking Co.™, my son scores high on his standardized and placement tests."
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"U.S. History Detective® is fabulous. You have to do more than just figure out the correct answer -- you have to give the sentence number(s) that best supports your answer. I love that. You have to read the text and support your conclusions."
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"The fun thing about Mathematical Reasoning™ is that every page is a little different. No rote facts or boredom here! Mix that in with a few game-like activities and lots of colors and pictures, and they had my kiddo hooked."
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"We did an experiment to see if Building Thinking Skills® would help students perform better on standardized and state tests. The improvement was remarkable. Test scores went up even after the first few months!"
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"Word Roots is everything I was searching for and more. It goes beyond spelling tests and teaches students to decipher words based upon prefixes, suffixes, and roots. The focus is on meaning, which in turn increases comprehension."
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"You wouldn't think something so fun could have such a profound effect on your thought process! Mind Benders® sharpen organizational and informational processing skills as well as strengthen reading skills."
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