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Ecology Fair University of Minnesota Monarch Lab

Abstracts from Cedar Park S.T.E.M. School 2013

Cedar Park S.T.E.M. School
7500 Whitney Drive
Apple Valley, MN 55124

Year: 2013
Teacher(s): Kelli Ellickson

Dragonfly Nymph Food Preference Study

Juweriya A, Jocelyn G, Atilla S, Balaid S

The fourth grade studied water. Our insect club collected aquatic invertebrates in our school pond using dip nets and observation tubs. We decided to place several dragonflies, a water beetle along with food (minnows, hornwort, freshwater shrimp and worms) in an aquarium for further study. When we returned to the lab a week later most dragonfly nymphs were dead or missing; and none of the food had been eaten.  To determine what dragonfly nymphs eat besides each other we conducted a food preference study.

Garden Pest or Pal?

Atlanta H, Helmer M, Caleb M, Mark P, Selena T

In this experiment squash bugs will be put to the test to determine if they have become our school garden's pests or pals.

How Does Pollution Affect Dragonfly Nymph Health?

Samantha C, Lily H, Nawal M, Uche N, Nandana N

The fourth graders are studying water. In class we built models of watersheds, built water filtration systems and conducted chemical and biological tests of our school pond. Our after school insect club collected aquatic invertebrates using dip nets and observation tubs. We decided to place several dragonflies and a water beetle in an aquarium of pond water for further study.  A week later we came back to a tank of dead dragonfly nymphs. We wondered why this happened so we set up an experiment to test dragonfly nymph's health in 3 different water quality situations using ph as a pollution indicator.

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