Feel like skipping stones but no body of water nearby? Never mind! Choose your own water and wave colors in this interactive Trinket.

It took me a little while to figure out the dimensions of the circles. Here’s the innermost wave:

#droplet1
tina.penup()
tina.setx(0)
tina.sety(-10)
tina.pendown()
tina.circle(20)

And here’s the outermost wave:

#droplet3
tina.penup()
tina.setx(0)
tina.sety(-100)
tina.pendown()
tina.circle(110)

Do you see what they have in common? To keep them nested, I started each Tina-circle on the same x-coordinate and each circle has a radius of ten greater than their starting point.