My budget is non-existant by the way. Unfortunately, it's too late to set up one by next week, and the other is expensive. Students crack open all but the 3 day into dishes, and draw, describe, measure, and weigh the embryos. Drape untouched saran wrap over a styrofoam cup, use somehting sterile to push part of it down into the cup, making an indentation large enough to hold the contents of an egg. You can see development occuring in the cup, and watch progression for about 10 days before the embryos die.
Unfertilized eggs go through cleavage divisions, sometimes to blastula.
Also a great lab, but you need a salt water tank, and an inverted microscope helps. Chapter 16 gives directions for observing regeneration in protists and animals, including planaria. You should see results within a week, depending on the size of the fragments. Again, this is a cheap lab focusing on development. At those temperatures, the flies should all be viable, but the 18 degree eggs may take over a month to eclose.