The Boy who cried 'wolf' learns how to add numbers in his head. But should he beware of wolves in sheep's clothing? ISBN 978-0-9810927-8-2 Buy the book,

• Grades: 2-4
• Classroom tested: Grades 2
• Plot
  • The Boy who cried 'wolf' learns how to add numbers in his head, with the help of the Wolf. But should he beware of wolves in sheep's clothing?
• Math insights
  • Students learn that flexible addition procedures help make mental addition easier (and more fun!).
• Grade-specific activities (see more details in the Tips section of the book)
  • In grades 2-4
    • Students learn to add sums like 39+25 by first adding 40+25 and then subtracting 1.
    • Students are also introduced to other flexible addition procedures.

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