Math

Pop Goes the Weasel (quadratic)

Pop Goes the Weasel

Helps you remember the quadratic formula tune.

✨ Tap to flipPop Goes the Weasel

When to use it

Use it to recall the quadratic formula by singing the formula's terms to the melody of Pop Goes the Weasel.

Example

The lyrics run: 'x equals negative b, plus or minus square root, b squared minus 4ac, all over 2a,' matching the formula $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$.

Common mistake

Forgetting that the entire numerator, including the plus-or-minus radical, sits over $2a$ rather than only over $a$.