This lab is perfect for the first day of biology.
Involves living organisms? Yes
Involves candy? Yes
Involves going outside? Yes
Involves an important concept that needs to be taught anyway? Yes
Involves a review of measuring, using tools and other important lab skills? Yes
Easy to acquire materials and easy-enough setup? Yes
Fun and gross? Yes!
What could be better? Using quantitative and qualitative analyses, students determine which of the two worms is alive, why, and whether some things might have some of the qualities of life, but not all.