A simple laboratory exercise to improve data presentation and interpretation skills

Beginning students in crop science often lack both an understanding of the scientific method and the ability to present and interpret experimental data. A simple and inexpensive laboratory exercise was devised to address these needs, which were clarified as the following behavioral objectives: (i) employ the scientific method in person, and (ii) improve skills in data presentation and analysis. As a class, we tested the effect of the number of holes in a container lid on the number of seed that would fall from the container during a single, rapid tip. Students were asked to predict a probable outcome before beginning the experiment. Data obtained by each group of students were plotted on the board. Some deviations from anticipated results were observed. However, a plot of mean values calculated by pooling data from all groups generally conformed to expectation. This helped to illustrate the concept of replication. Overall student response to this laboratory session was favorable. We accomplished our primary objectives and were also able to stimulate classroom participation during this first laboratory session.