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Cross-Number
& Thinking Strategies

Created by Celia Baron

We develop effective, easy-to-use and fun elementary school numeracy resources.

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Cross-Number Discovery Puzzles & Games are designed to meet students where they are in their learning and to help take them to the next level.

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  • Fun & engaging puzzles and games for Pre/K to Grade 5
  • Based on research on how children develop numeracy concepts
  • Includes a range of topics which gradually become more challenging
  • Allows for differentiated instruction
  • Locates and remediates any gaps in math understanding
  • Easy and straightforward to administer and mark
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The Thinking Strategies series for addition, subtraction, multiplication and division is a highly regarded program for teaching basic facts.

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  • Based on research on how a child master's basic facts
  • Facts are presented in an order to make them intuitive and simple to learn
  • Provides a multitude of strategies including models, patterns and rhymes.
  • Unique and captivating activities
  • Clear and concise lesson plans
  • Accessory resources available
“Learning facts is so easy with this program, and I love the colouring activities!”

— Ella K., Grade 2 Student, Edmonton, Canada

"The Cross-Number puzzles are a fun way to review many math concepts in one activity. My students love them, and I use the different levels, depending on each student's ability"

— Francesca Gallo, Grade 4 teacher

"I have been teaching for many years, and the students have never learned mathematics as well as they have this year with this program. The parents were involved and were very pleased with the results"

— Sylvia Milner, Grade 4 teacher