Without cells, life could not exist. Explain that the group will be building a model of a cell. Divide participants into teams of six to eight. Direct each team to a station. After they have finished making the pie or tortilla, let each team member enjoy a piece.
Cells differ in shape and size.
Field any questions participants have about cells. You may not be able to answer all of their questions. Use Appendix B to steer them to some excellent sources of information about cells. Instead, make the pie as instructed. Say that a pie is like a cell.