Solve Physics Problems Online

Solve Physics Problems Online-24
The last one is assessing the solution stage to see if the solution meets the criteria of correct interpretation and completeness. Experts work forward and evaluate often (Foster, 2000): The experts tend to work forward from given values and known quantities to the wanted quantity, whereas novices tend to work backward from the desired quantity to the given variables (Larkin, Mc Dermott, Simon, & Simon, 1980). This study reports an investigation of the impact of modeling-based interactive engagement teaching approach on students’ physics problem-solving ability.Larkin (1980) showed that experts used assembling, planning, solving, and checking steps before solving a problem. Experts monitor and control their strategies during problem solving. In other words, do students tend to become experts?

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Larkin (1983) showed that experts used their domain-specific representations as a guide to solving problems before they used mathematics.

Domain-specific representations include drawing diagrams. Experts in general draw figures to understand the problem before solving, whereas novices do not have this skill (Schultz & Lockhead, 1991).

Surface features are objects, physical terms, and physical configurations in a given problem.

Experts did not use these surface characteristics for solving problems. Experts are deliberate and they plan before solving a problem (Foster, 2000): Experts analyze a problem carefully before solving it rather than directly using equations to solve it.

They found that experts had qualitative physical explanations.

Novices lacked physics knowledge to set up a qualitative physical explanation.It is a method that improves students’ conceptual understanding by their interactions with one another encouraging problem-solving and some hands-on activities.This method provides immediate feedback from discussions with their peers, teaching assistants, and/or instructors.Larkin & Reif (1979) called the qualitative analysis a domain-specific representation.In their study, they gave physics problems to experts and novices to solve by using a think-aloud protocol.Experts know more and how to use the knowledge (Foster, 2000): The difference between experts and novices in physics is that experts know more physics.According to Chi, Feltovich, & Glaser (1981), novices used surface features of the problem to solve problems.According to Alan Van Heuvelen (1991), students do not draw diagrams because they do not understand concepts and principles.Also, students are not taught how to create their own diagrams, and their alternative conceptions are in conflict with what they know. The answers to these questions help them to evaluate their progress and give them ideas of what to do for the next step.In almost all introductory physics courses problem solving is a main part of the course (Hsu, Brewe, Foster, & Harper, 2004).Physics textbook chapters not only have many drill and practice problems, which are well defined and have all relevant information, but also have many solved examples of problems (Foster, 2000).


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