Twitter-Length Tasks can be quickly and simply explained, yet allow for extensive exploration. 

Use one cut to make a square into 2 pieces. What types of shapes are possible?

(Two Rectangles, two trapezoids, a triangle and a trapezoid, what else?)

How many different types of shapes can you create if you used 2 cuts to divide the square?

Is the answer different if you started with a non-square rectangle? Or a triangle? Or used more cuts?