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200+ Award-Winning Textbooks & Activity Books!
Reading, Writing, Math, Science, Social Studies
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Algebra I & II
Gr. 7-12+
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Algebra Magic Tricks
Gr. 2-12+
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Algebra Word Problems
Gr. 7-12+
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Balance Benders
Gr. 2-12+
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Balance Math & More!
Gr. 2-12+
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Basics of Critical Thinking
Gr. 4-7
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Brain Stretchers
Gr. 5-12+
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Building Thinking Skills
Gr. Toddler-12+
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Building Writing Skills
Gr. 3-7
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Bundles - Critical Thinking
Gr. PreK-9
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Bundles - Language Arts
Gr. K-8
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Bundles - Mathematics
Gr. PreK-9
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Bundles - Multi-Subject Curriculum
Gr. PreK-12+
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Bundles - Test Prep
Gr. Toddler-12+
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Can You Find Me?
Gr. PreK-1
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Complete the Picture Math
Gr. 1-3
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Cornell Critical Thinking Tests
Gr. 5-12+
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Cranium Crackers
Gr. 3-12+
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Creative Problem Solving
Gr. PreK-2
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Critical Thinking Activities to Improve Writing
Gr. 4-12+
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Critical Thinking Coloring
Gr. PreK-2
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Critical Thinking Detective
Gr. 3-12+
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Critical Thinking Tests
Gr. PreK-6
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Critical Thinking for Reading Comprehension
Gr. 1-5
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Critical Thinking in United States History
Gr. 6-12+
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CrossNumber Math Puzzles
Gr. 4-10
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Crypt-O-Words
Gr. 2-7
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Crypto Mind Benders
Gr. 3-12+
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Daily Mind Builders
Gr. 5-12+
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Dare to Compare Math
Gr. 2-7
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Developing Critical Thinking through Science
Gr. 1-8
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Dr. DooRiddles
Gr. PreK-12+
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Dr. Funster's
Gr. 2-12+
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Editor in Chief
Gr. 2-12+
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Fun-Time Phonics!
Gr. PreK-2
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Half 'n Half Animals
Gr. K-4
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Hands-On Thinking Skills
Gr. K-1
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Inference Jones
Gr. 1-6
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James Madison
Gr. 10-12+
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Jumbles
Gr. 3-5
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Language Mechanic
Gr. 4-7
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Language Smarts
Gr. 1-4
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Mastering Logic & Math Problem Solving
Gr. 6-9
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Math Analogies
Gr. K-9
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Math Detective
Gr. 3-8
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Math Games
Gr. 3-8
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Math Mind Benders
Gr. 5-12+
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Math Ties
Gr. 4-8
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Math Word Problems
Gr. 4-10
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Mathematical Reasoning
Gr. Toddler-11
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Middle School Science
Gr. 6-8
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Mind Benders
Gr. PreK-12+
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Mind Building Math
Gr. K-1
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Mind Building Reading
Gr. K-1
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Novel Thinking
Gr. 3-6
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OLSAT® Test Prep
Gr. PreK-K
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Organizing Thinking
Gr. 2-8
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Pattern Explorer
Gr. 3-9
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Practical Critical Thinking
Gr. 8-12+
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Punctuation Puzzler
Gr. 3-8
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Reading Detective
Gr. 3-12+
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Red Herring Mysteries
Gr. 4-12+
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Red Herrings Science Mysteries
Gr. 4-9
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Science Detective
Gr. 3-6
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Science Mind Benders
Gr. PreK-3
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Science Vocabulary Crossword Puzzles
Gr. 4-6
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Sciencewise
Gr. 4-12+
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Scratch Your Brain
Gr. 2-12+
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Sentence Diagramming
Gr. 3-12+
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Smarty Pants Puzzles
Gr. 3-12+
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Snailopolis
Gr. K-4
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Something's Fishy at Lake Iwannafisha
Gr. 5-9
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Teaching Technology
Gr. 3-12+
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Tell Me a Story
Gr. PreK-1
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Think Analogies
Gr. 3-12+
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Think and Write
Gr. 3-8
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Think-A-Grams
Gr. 4-12+
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Thinking About Time
Gr. 3-6
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Thinking Connections
Gr. 4-12+
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Thinking Directionally
Gr. 2-6
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Thinking Skills & Key Concepts
Gr. PreK-2
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Thinking Skills for Tests
Gr. PreK-5
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U.S. History Detective
Gr. 8-12+
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Understanding Fractions
Gr. 2-6
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Visual Perceptual Skill Building
Gr. PreK-3
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Vocabulary Riddles
Gr. 4-8
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Vocabulary Smarts
Gr. 2-5
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Vocabulary Virtuoso
Gr. 2-12+
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What Would You Do?
Gr. 2-12+
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Who Is This Kid? Colleges Want to Know!
Gr. 9-12+
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Word Explorer
Gr. 6-8
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Word Roots
Gr. 3-12+
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World History Detective
Gr. 6-12+
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Writing Detective
Gr. 3-6
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You Decide!
Gr. 6-12+
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Spelling DooRiddles A1 - eBook
Grades: 2-3
Language Arts
Grades: 2-3
Language Arts
Description and Features
Use word-play and rhyming to strengthen students' spelling skills!
View Sample Pages 