Welcome! Use the sliders to line up the quadratic. Let's explore how they work. It might be easier to use the keyboard arrows than the mouse. For the first two rounds, get your quadratic to line up with the other one graphed. After the second round, get your quadratic to pass through the two zeroes. When you're getting closer, the target turns greener; a max score is 100. Each round has two options; let's find out which is easier. Press 'reset?' if the quadratic gets away from you. Enjoy!
Which is easier, Option 1 or Option 2? Why? Not loading? Try hitting "Refresh" in your browser - be patient. The input bar at the bottom is another way to set slider values. For example, you can type "a = 3 + 1/4" to set [i]a[/i] equal to 3.25 .