Go to flickr and find 3 images to edit. Pick one that is dark, one shot in diffused light( mostly middle tones not a lot of light and dark, which is low contrast) and one that has a lot of light and darks( contrasty like direct light)

Correct the images using the workflow as shown in lecture

Post before and after images in open lab with description of your corrections. A screen shot of the basic panel would be ok