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Mathematical Reasoning™
Full curriculum

Grades: Toddler-11

Mathematics

Multiple Award Winner
Forget boring math lessons and dreaded drill sheets. These fun, colorful books use engaging lessons with easy-to-follow explanations, examples, and charts to make mathematical concepts easy to understand. They can be used as textbooks or comprehe...»
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Mind Benders®

Grades: PreK-12+

Critical Thinking

Multiple Award Winner
This is our best-selling deductive thinking puzzles series that develops the logic, reading comprehension, and mental organization skills vital to achieving higher grades and top test scores in all subjects. These award-winning, fun puzzles are also...»
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Building Thinking Skills®
Full curriculum

Grades: Toddler-12+

Critical Thinking

Multiple Award Winner
This series develops the critical thinking skills necessary for success in reading, writing, math, science, social studies, and standardized tests. These award-winning books comprise the best-selling thinking skills program in the world! The engaging...»
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Word Roots

Grades: 3-12+

Language Arts

Multiple Award Winner
These award-winning books teach the meaning and spelling of roots, prefixes, and suffixes that are the elements used to form words in English. Learning these word elements dramatically improves spelling and the ability to decode unfamiliar words. Th...»
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Editor in Chief®
Full curriculum

Grades: 2-12+

Language Arts

Multiple Award Winner
These fun and highly-acclaimed products teach grammar, punctuation, spelling, capitalization, and critical reading in a standards-based approach to language mechanics that emphasizes critical thinking about writing rather than the usual drill and pra...»
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Reading Detective®

Grades: 3-12+

Language Arts

Multiple Award Winner
This series uses highly-effective, literature-based critical thinking activities to develop the analysis, synthesis, and vocabulary skills students need for exceptional reading comprehension. The activities are especially effective at helping student...»
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Balance Benders™

Grades: 2-12+

Critical Thinking, Mathematics

Multiple Award Winner
Move over Sudoku, here come Balance Benders™! You can use these activities as quick, fun logic problems or as stepping stones to success in algebra. Students develop problem-solving skills and pre-algebra skills as they solve balance puzzles th...»
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Dr. Funster's

Grades: 2-12+

Critical Thinking, Language Arts, Mathematics

Award Winner
These books are collections of our most popular, quick, fun, thinking puzzles. The wide variety of activities in each book develop reading comprehension, vocabulary, and mathematical reasoning, as well as writing, spatial, and visual perceptual skill...»
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Critical Thinking Detective™

Grades: 3-12+

Critical Thinking, Language Arts, Mathematics

Multiple Award Winner
The Critical Thinking Detective easy-to-use detective cases develop critical thinking skills by requiring students to read carefully and analyze and synthesize information to guide their decision-making. Students also develop observation skills, read...»
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Language Smarts™
Full curriculum

Grades: 1-4

Language Arts

Multiple Award Winner
These fun, colorful books can be used as textbooks or comprehensive workbooks with your textbooks to teach reading, writing, grammar, and punctuation skills for Grades 1-4. Each book also develops critical thinking, vocabulary, and several othe...»

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Search by Book Series

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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
Puzzles that Teach Physics
Gr. 4-12+
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+

200+ Award-Winning Educational Textbooks, Activity Books, & Printable eBooks!

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Mathematical Reasoning™

Mind Benders®

Building Thinking Skills®

Word Roots

Editor in Chief®

Reading Detective®

Balance Benders™

Dr. Funster's

Critical Thinking Detective™

Language Smarts™

Books That Teach Critical Thinking • Reading • Writing • Math • Science • Social Studies

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Preschool Academics

Struggling Students

Special Needs

Top of the Class!

Gifted Education

Homeschooling