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Curriculum › Math ›Grade 2

Grade 2 Math · Level 6, Enrichment + Grade-3 Prep

Parity Relationships

Recognize and explain deeper patterns involving odd and even numbers.

Questions like

  • Is 13 odd or even?
  • Is 246 odd or even?

How the lesson starts: Parity Relationships

  1. The penguin dance party

    Hi friend! It's the penguin dance party! Every penguin wants a dance partner. If every penguin has a partner, the number is even. If one is left out, it's odd!

  2. Partners or not?

    Here come 6 penguins: one pair, two pairs, three pairs. Nobody is left out, so 6 is even! Now 7 penguins: three pairs and one left out. So 7 is odd.

  3. The ones digit secret

    Now hundreds of penguins come! Pairing them all takes forever. Here's a secret. Just look at the ones digit. 0, 2, 4, 6 or 8 means even. 1, 3, 5, 7 or 9 means odd.