Curriculum › Math ›Grade 2

Grade 2 Math · Level 2, Relationships and Applied Basics

Odd and Even Numbers

Recognize odd and even numbers using pairing, counting patterns and the ones digit.

How the lesson starts: Odd and Even Numbers

1. Granny Rosa's socks

   Hi friend! Granny Rosa is sorting her socks. Socks go in pairs, two by two. But look, one sock has no partner! Today we'll learn about odd and even numbers.

2. Pairs, or one left over

   Here are 6 socks: one pair, two pairs, three pairs. None left over, so 6 is even! Now 7 socks: three pairs and one lonely sock. One left over, so 7 is odd.

3. Two equal groups

   Another trick! Split 10 socks into two equal piles. Five and five. 5 + 5 = 10. That's an equal-addend way to make 10. If a number splits into two equal groups, it's even!