Math Flips

Math Flips are flashcards with a problem on the front and a similar problem on the back (instead of a problem and an answer) to encourage relational thinking rather than answer-getting.

Math Flips routine:

  • Look at side A: How many? How do you know?
  • Look at side B: How many NOW? How do you know?
  • After a while, ask generalizing questions such as: How does A help you solve B? What is the same and different about A and B?

Math Flips are inspired by Chrissy Newell, who created a number talk with two related problems and the question sequence “How many? How do you know?” and “How many NOW? How do you know?”, Annie Fetter and Joe Schwartz, who say “Ask about ideas, not answers,” the amazing number sense routines shared by Steve Wyborney (www.stevewyborney.com), the book Math Fact Fluency by Jennifer Bay Williams and Gina Kling, and YOU, who can send ideas/feedback (email or twitter) or make your own with the templates below.

Download all current decks here (Math Flips Folder) or choose specific decks below. (Alternate link to Math Flips Folder)

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(Photo courtesy Jenny Ainslie)

Plus and Minus 1 within 10

Download here: Plus and Minus 1 within 10

Prerequisite “Regular” flashcards: Subitizing and Numbers within 10

Count On within 10

Download here: Count On within 10

Corresponding Visual: How Many Now?

Count On within 20

Download here: Count On within 20

Corresponding Visual: How Many Now?

Doubles and Near Doubles

Download here: Doubles and Near Doubles

Make 10 Strategies with 3 Addends

Download here: Make 10 Strategies with 3 Addends

Prerequisite “Regular” flashcards: Combinations of 10 and Teen Numbers

Make 10 Strategies with 2 Addends 

Download here: Math 10 Strategies with 2 Addends

Prerequisite “Regular” flashcards: Combinations of 10 and Teen Numbers

Addition within 100: Plus and Minus 1 and 10

Download here: Addition within 100: Plus and Minus 1 and 10

Addition within 100: 2 Digit plus 1 Digit

Download here: Addition within 100: 2 Digit plus 1 Digit

Addition within 100: 2 Digit plus Multiples of 10

Download here: Addition within 100: 2 Digit plus Multiples of 10

Addition within 100: 2 Digit plus 2 Digit

Download here: Addition within 100: 2 Digit plus 2 Digit

Subtraction within 10

Download here: Subtraction within 10

Subtraction within 15

Download here: Subtraction within 15

Subtraction within 20

Download here: Subtraction within 20

Subtraction within 100

Download here: Subtraction within 100

Multiplication within 100: 2s, 5s, and 10s, with Commutative Property

Download here: 2s, 5s, and 10s, with Commutative Property

Multiplication within 100: Doubling with 4s, 6s, and 8s

Download here: Doubling with 4s, 6s, and 8s

Corresponding Visual: Doubling and How Many Now?

Multiplication within 100: Friendly Numbers with 3s and 6s

Download here: Friendly Numbers with 3s and 6s

Multiplication within 100: Friendly Numbers with 9s and 4s

Download here: Friendly Numbers with 9s and 4s

Corresponding Visual: One More Row or Column

Multiplication within 100: Hardest Facts 

Download here: Hardest Facts

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