14 cycles of five experiments (compared to 30 seeds with only one
cycle, as in my investigation). The students could also critically
reflect on their own experimental designs. This learning activity also
sensitizes students about the quality of journals in which research
are printed, and to distinguish between peer-reviewed journals and
grey literature/questionable journals.
As noted, this inquiry could be expanded to include a focus on
the influence of music on people. The literature shows that the biological effects of music on humans include the activation of neuro-transmitters and the alteration of stress hormones (Miranda, 2013).
By packaging the curriculum content and learning activities in a
format that accommodates the real interests of adolescents, we might
see both cognitive and affective gains in the biology classroom. The data
obtained from the poster activity clearly illustrate such affective gains.
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JOSEF DE BEER is a Research Professor in the School for Natural Sciences
and Technology for Education, North-West University, Potchefstroom,
South Africa; e-mail: firstname.lastname@example.org.