Screen 1: Students choose how to stretch and shift a parabola, then write an equation for their transformed parabola. Their equation is then graphed for them for visual feedback on how to improve their equation.
Screen 2: Students write equations of rational functions to match specified criteria.
Both screens also include student feedback, correctness checks, and motivational gifs 
Screen 2 is built on the work of @Sameer_Shah [Copy of] Rational Functions 2 • Activity Builder by Desmos
Could use feedback on how to ensure equations match the specified degree and leading coefficient criteria in screen 2.