Here is the doubles song we sang today in class. It is sung to the tune of Row, Row, Row Your Boat.
1 + 1 is 2, 2+2 is 4, 3+3 is 6,
now let's do some more.
4+4 is 8, 5+5 is 10, 6+6 is 12,
and we'll add again.
7+7's 14, 8+8's 16, 9+9 is 18,
wow, that's really keen!
