Physics education
In Ancient Greece, Aristotle wrote what is considered now as the first textbook of physics. His ideas were taught unchanged until the Late Middle Ages. Scientists started making discoveries that did not fit his theories during this period. Copernicus' discovery contradicted Aristotle's idea of an Earth-centric universe. Aristotle's ideas about motion remained dominant for centuries. They were finally displaced at the end of the 17th century when Isaac Newton published his own ideas. Today's physics students often think of physics concepts in Aristotelian terms despite being taught only Newtonian concepts. This persistence of ancient thought patterns complicates modern teaching efforts.
Lecturing remains one of the more traditional ways of teaching science today. Owing to its convenience and the fact that most teachers are taught by it, it stays popular. Certain limitations exist compared to other methods though. It does little to develop critical thinking or scientific attitude among students. The method is teacher centric by design. Demonstration involves a teacher performing experiments which students observe and ask questions about. Afterward the teacher explains the experiment further and tests understanding via questions. Science is not an entirely theoretical subject so demonstrations hold importance. Lecture-cum-Demonstration combines these two approaches simultaneously. The teacher performs the experiment while explaining it to provide more information in less time. Students still only observe without getting practical experience of their own.
Laboratories have students conduct physics experiments and collect data by interacting with physics equipment. Generally students follow instructions in a lab manual step-by-step. Typical learning objectives include reinforcing course content through real-world interaction similar to demonstrations. Thinking like experimental physicists serves as another key goal lately. There has been some effort to shift lab activities toward this latter objective. Educators separate labs from course content and allow students to make their own decisions. They question the notion of a correct experimental result now. Unlike the demonstration method the laboratory method gives students practical experience performing experiments like professional scientists. However it often requires a significant amount of time and resources to work properly. Students who participate in active learning for example with hands-on experiments learn through self-discovery. By trial and error they learn to change their preconceptions about phenomena in physics and discover underlying concepts.
A group of 8-10 students and a tutor meet together to study a case or trigger problem. One student acts as chair and one as scribe to record the session. Students interact to understand terminology and issues of the problem while discussing possible solutions. The group breaks up for private study then returns to share results. This approach has been used in many UK medical schools. The technique fosters independence, engagement, development of communication skill, and integration of new knowledge with real world issues. It has been shown to be effective in teaching physics. The technique requires more staff per student though. Staff must be willing to facilitate rather than lecture. Well designed and documented trigger scenarios are also necessary requirements.
Physics education research is the study of how physics is taught and how students learn physics. It forms a subfield of educational research. A bibliography by Duit from 2005 lists publications on students' ideas regarding various topics. Mechanics involving force accounts for 792 entries in this collection. Electricity concerning electrical circuits represents 444 entries. Optics follows with 234 entries. Particle models appear in 226 entries. Thermal physics covering heat and temperature shows 192 entries. Energy concepts account for 176 entries. Astronomy regarding Earth in space contains 121 entries. Quantum physics appears in just 77 entries. Nonlinear systems or chaos make up 35 entries. Sound comprises 28 entries. Magnetism includes 25 entries. Relativity rounds out the list with only 8 entries. This data highlights which areas generate the most research interest among educators.
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Common questions
Who wrote the first textbook of physics in Ancient Greece?
Aristotle wrote what is considered now as the first textbook of physics. His ideas were taught unchanged until the Late Middle Ages.
When did Isaac Newton displace Aristotle's ideas about motion?
Isaac Newton published his own ideas at the end of the 17th century to finally displace Aristotle's ideas about motion. This shift occurred after scientists made discoveries that did not fit Aristotelian theories during the Late Middle Ages.
What are the limitations of lecturing as a method for teaching science today?
Lecturing does little to develop critical thinking or scientific attitude among students because it is teacher centric by design. It remains popular owing to its convenience and the fact that most teachers are taught by it.
How do laboratories give students practical experience compared to demonstrations?
Laboratories have students conduct physics experiments and collect data by interacting with physics equipment unlike demonstrations where students only observe. Students who participate in active learning learn through self-discovery and trial and error to change their preconceptions about phenomena in physics.
Why is the tutorial method effective for teaching physics despite requiring more staff per student?
The tutorial technique fosters independence, engagement, development of communication skill, and integration of new knowledge with real world issues. A group of 8-10 students and a tutor meet together to study a case or trigger problem while one student acts as chair and one as scribe to record the session.