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We've put together this easy-order book bundle so you don't have to. This bundle offers our most popular books for Grades 9-12 at a 20% discount, so you get more for less.

Titles included in this bundle:
  • Algebra I Word Problems
  • Algebra II Word Problems
  • Critical Thinking Book Two
  • Critical Thinking Book Two - Instruction/Answer Guide
  • Dr. DooRiddles C1
  • Editor in Chief® C1
  • Editor in Chief® C2
  • Mind Benders® B4
  • Mind Benders® C1
  • Scratch Your Brain® Geometry
  • Think-A-Grams C1
  • Word Roots B2
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Mind Benders: B4
Mind Benders® B4
Our Price: $9.99

Grade(s): 7-12+
Activities: 14
Pages: 34

Deductive reasoning puzzles teach children logic and improve reading comprehension and test scores.
Mind Benders: C1
Mind Benders® C1
Our Price: $9.99

Grade(s): 7-12+
Activities: 14
Pages: 37

Deductive reasoning puzzles teach children logic and improve reading comprehension and test scores.
Word Roots B2
Word Roots B2
Our Price: $18.99

Grade(s): 7-12+
Activities: 82

Learn Latin and Greek prefixes, suffixes and root words for improved vocabulary.
Critical Thinking Book 2, Student
Critical Thinking Book 2, Student
Our Price: $24.99

Grade(s): 7-12+
Activities: 66
Pages: 247

Critical Thinking teaches your child to think logically, present well-developed arguments, and see through unsupported arguments. Book Two builds on the skills developed in Book One, while teaching more advanced concepts.

Instruction/Answer Guide sold separately.
Critical Thinking Book 2, Teacher
Critical Thinking Book 2, Teacher
Our Price: $9.99

Grade(s): 7-12+
Activities: 66
Pages: 247

Instruction guide to accompany Critical Thinking, Book 2
Algebra I Word Problems
Algebra I Word Problems
Our Price: $32.99

Grade(s): 7-12+
Activities: 490
Pages: 264

Algebra Word Problems uses process skills and the gradual introduction of more challenging concepts to give students the confidence and ability to master algebra word problems.
Algebra II Word Problems
Algebra II Word Problems
Our Price: $32.99

Grade(s): 7-12+
Activities: 214
Pages: 175

Algebra Word Problems uses process skills and the gradual introduction of more challenging concepts to give students the confidence and ability to master algebra word problems.
Editor in Chief C1 software
Editor in Chief C1
Our Price: $18.99

Grade(s): 9-12+
Activities: 33
Pages: 134

Editor in Chief® improves your child's grammar, punctuation, spelling, capitalization, and attention to detail.

Students identify and circle errors in each story. Then they insert, modify, or delete punctuation, words, and short phrases to make corrections. An editing checklist and annotated guide to grammar, usage, and punctuation are provided to help focus students' thinking and allow them to match their answers to applicable rules. Detailed answers are also included.
Editor in Chief C2
Editor in Chief C2
Our Price: $18.99

Grade(s): 9-12+
Activities: 33
Pages: 130

Editor in Chief® improves your child's grammar, punctuation, spelling, capitalization, and attention to detail.

Students identify and circle errors in each story. Then they insert, modify, or delete punctuation, words, and short phrases to make corrections. An editing checklist and annotated guide to grammar, usage, and punctuation are provided to help focus students' thinking and allow them to match their answers to applicable rules. Detailed answers are also included.
Dr. DooRiddles C1
Dr. DooRiddles C1
Our Price: $10.99

Grade(s): 8-12+
Activities: 160
Pages: 48

Dr. DooRiddles develops students' fluency and understanding of word meanings and associations as it improves their spelling, vocabulary, reading, and problem-solving skills.

Students carefully read through clues in each riddle, analyzing connections within and between clues to figure out what is being described. Solving the riddles requires students to evaluate homonyms, synonyms, homophones, prefixes, roots, and suffixes in order to deduce and spell whole and partial word answers.
Scratch Your Brain Geometry
Scratch Your Brain Geometry
Our Price: $19.99

Grade(s): 8-12
Activities: 132
Pages: 136

Scratch Your Brain® contains a variety of engaging, often humorous activities, puzzles, patterns, sequences, writing multi-step solutions, and more. It also encourages brainstorming and teaches students there is usually more than one way to solve a problem. Activities are sequenced by difficulty throughout each chapter to allow students to gradually build their skills.
Think-A-Grams C1
Think-A-Grams C1
Our Price: $12.99

Grade(s): 9-12+
Activities: 100
Pages: 104

Think-A-Grams bring together students' logical/ objective (left-brain) and random/subjective (right-brain) thinking to sharpen their language and visual skills. Students analyze the way words are written (e.g., size, position, direction) to solve each puzzle using common idioms and words.