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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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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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Dr. DooRiddles & Spelling DooRiddles

Grades: PreK-12+

Language Arts

These fun, tantalizing riddles develop students' fluency and understanding of word meanings and associations as they improve their spelling, vocabulary, reading, critical thinking, and creative problem-solving skills. Perceiving relationships between...»
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Critical Thinking Coloring Books

Grades: PreK-2

Critical Thinking

Award Winner
More fun than mindless coloring books, these coloring puzzles develop organized analysis, deductive reasoning, observation, classification, and fine motor skills needed for academic success. The puzzles can be used after school, at home, and on trips...»
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Thinking Skills for Tests

Grades: PreK-5

Critical Thinking, Test Prep & Tests

Multiple Award Winner
All standardized tests measure the ability to think carefully and critically. Most parents and teachers prepare their students for standardized tests using practice tests that lack vital instruction in test-taking skills. These easy-to-use, fun...»
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Can You Find Me?

Grades: PreK-1

Critical Thinking

Award Winner
These fun, colorful, mind-building riddles introduce young minds to critical thinking and organized analysis. To solve the riddles, students practice: • Identifying Similarities and Differences • Forming/Following Sequences and Pat...»

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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. 4-9
Brain Stretchers
Gr. 5-12+
Building Thinking Skills
Gr. Toddler-12+
Building Writing Skills
Gr. 3-7
Bundles - Curriculum
Gr. Toddler-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. 8-12+
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. 9-12+
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. 6-8
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, & eBooks!

Advanced Search Results

Mathematical Reasoning™

Building Thinking Skills®

Dr. DooRiddles & Spelling DooRiddles

Critical Thinking Coloring Books

Thinking Skills for Tests

Can You Find Me?

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

Preschool Academics

Struggling Students

Special Needs

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Gifted Education

Test Prep