Odd, Even & Skip Counting

Pair up the socks: one left over means the number is odd!

For ages 5–8 · Math · Free · No ads

What your child learns

  • Understanding that even numbers make pairs with none left over, and odd numbers have one left over
  • Telling odd and even numbers up to 20, first with dots in pairs, then from the number alone
  • Skip counting by 2s, 5s and 10s up to 100, a first step toward times tables
  • Counting equal groups: several bags with the same number of candies, counted bag by bag

How to play

  1. Press "Play now". In the first rounds, drag a sock (or mitten) onto the one that matches it, or tap one and then the other, to make a pair.
  2. When the pairs are done, check whether one is left over, then pick "Even" or "Odd". On a computer, Tab, Enter and keys 1–2 work too.
  3. For skip counting, look at the numbers and the bunny's hops (+2, +5, +10), then pick what comes next from 3 cards (keys 1–3).
  4. For candy bags, tap each bag to count along (5, 10, 15...), then pick the total.

For parents

  • Use socks, chopsticks or shoes at home: if they all make pairs the number is even, if one is left over it is odd.
  • The Vietnamese version uses the usual school terms "số chẵn" (even) and "số lẻ" (odd), and "đếm thêm 2" (count on by 2) as in the grade 2 lessons on the 2 and 5 times tables.
  • Skip count by 2s on the stairs, and by 5s or 10s with fingers or coins.
  • A wrong answer locks that button and counts only once; getting it right the first time earns a star. The difficulty adjusts to your child.