By Harry Keller
Editor, Science Education
All teachers must learn certain things. For example, they learn about learning theory, classroom discipline, and how to write lesson plans. In addition, they learn the material and ideas of their chosen subject area. As I read articles about science education and communicate with many science teachers, I become more convinced that our teachers colleges are not providing the necessary learning to our future science teachers.
What is this necessary learning and why is it important?
To answer this question, you must first understand what science is. Science is not a bunch of “facts,” e.g., Mercury is closest to the Sun; prophase is the first phase of mitosis; force is proportional to the rate of change of momentum; igneous rocks are formed from molten rock. Science is an approach to finding out these things, a way of thinking, of solving problems. It uses the work of previous scientists and new data to be sure. So those “facts” are part of the learning but hardly the most important part.
So-called science facts are always subject to revision, but the means by which they were extracted from nature with great difficulty remains the same. We must teach some science content in order to have material upon which to apply the developing thinking skills of our students.
Science courses inflict lots of vocabulary on students too. Some words seem familiar but are used by scientists in a very specific manner. “Work,” for example, does not take place when you’re holding a heavy weight above your head – if you’re talking about science. Work is a specific and quantitative term in science. Other words seem entirely unfamiliar and even bizarre. In physical science, “entropy” is a made-up word for a measure of disorder in things.
Science education must provide the content of science including vocabulary, an understanding of the nature of science, and development of scientific thinking skills. Anything else is superfluous in primary and secondary education. In post-secondary education of science and medical majors, there’s more, but that part is not the subject of this discussion.
Without an understanding of the nature of science, students will not be able to interpret what’s going on around them every day. You read about global warming and conflicting claims regarding it. You read about protecting species from extinction and then about how 95% of all species in the history of the Earth have gone extinct naturally. You read about an energy crisis and then about how the price of gasoline is being manipulated by Wall Street traders and that the energy situation is just fine. All of this would be just entertainment were it not for the fact that so many countries are democracies, and the people are expected to vote, to make decisions, on these issues in elections. Continue reading
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