Twisting has the effect of adding 1:

x \to x + 1

Turning transforms any number into the negative of its reciprocal:

$x \to - \frac{1}{x}$

Starting at zero, the first five moves:

Twist, twist, twist, turn, twist

produces:

0, 1, 2, 3, - \frac{1}{3}, \frac{2}{3}

Can you continue from there and then return to zero?

You can use the reciprocal button on a calculator ( $\frac{1}{x}$ ) to help with the calculations.

Take another look at the video. Can you spot the strategy they used to get back to 0?