This activity can be done with a few simple materials which include: fertilized frog eggs, small finger bowls, dissecting needles, microscopes-dissecting and or compound.
Eggs should be maintained in pond water, with sprigs of Elodea if possible, at a temperature of 18 to 20 degrees Centigrade. Eggs which become cloudy should be discarded. Each day students are to remove a few eggs and examine them. Using a textbook, students should make daily labeled diagrams to show the observed developmental changes. Hatched tadpoles may be transferred to a large bowl or aquarium containing pond water. The young tadpoles will survive nicely on baby food spinach.