Inchworm

Two and two are four
Four and four are eight
That's all you have on your business-like mind
Two and two are four
Four and four are eight
How can you be so blind

sung in counterpoint:

Two and two are four
Four and four are eight
Eight and eight are sixteen
Sixteen and sixteen are thirty-two

Inchworm, inchworm
Measuring the marigolds
You and your arithmetic
You'll probably go far