Modeling refers to the process of building a model. Modeling or model building is the most conceptually engaging activity possible with the greatest contribution to conceptual change and mental model development.
Model building may not need the support of a computer, similar to creating a concept map without the need of using a computer. However, a computer-based model is usually more interactive and dynamic, and computer supported modeling can make scientific materials more accessible and interesting to learners (White, 1993). Here are some reasons for model building or modeling:
However, we also need to recognize that models are inexact and incomplete. They are often a simplified version of the real problem or system. There are differences between what is modeled and the model itself. Approaches to modeling Modeling or model building is usually used in the following approaches:
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Model/modeling and Simulation
Sometimes the terms model and simulation are used interchangeably. However, they are conceptually different. A model is a physical replica (e.g., a house model) or equation of a system or a situation. It is similar to but simpler than the system it represents. It has the same salient features of the real system as close as possible. It is usually a static representation of the key structures, features, or relationships of a real system. A simulation usually uses a model to emulate the dynamic characteristics of a system. It is an execution of a model. A simulation is useful to study the properties of a model of a real-life system that would otherwise be too complex, too large/small, too fast/slow, not accessible, too dangerous or expansive. While a model aims to be true to the system it represents, a simulation can use a model to explore states that would not be possible in the original system. Look at the above three figures, which ones are more like models or simulations?
3 Comments
R Vishunu
3/31/2018 12:37:32 pm
A potential limitation when it comes to modelling in a science lesson would be that it tends to be a more simplified version of a particular concept or situation. A model is relatively used when it is impractical to create conditions to test or objectify a scientific theory. However, that does not make the model a substitute for a controlled scientific experiment which generates quality data. Therefore a model would be only good as the information and input used to create it. On the other hand, an actual scientific experiment would readily provide a more precise and comprehensive result.
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Melissa S.
4/5/2018 07:20:39 pm
Hi Vishunu, I agree that we need to be aware of the reduced and simplified level that models work on. It is useful especially when the phenomena or concept it represents are not "open" to observation for our learners due to physical restrictions. Moreover, I find that some form of autonomy is given to learners when they have the chance to manipulate the model and this generates interest in the subject. But a more concrete, actual example will always be more convincing and the hands-on approach can allow learners to develop understanding at a deeper level.
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Patricia Sin
4/3/2018 04:39:16 pm
Models or modelling as cognitive tools can enhance thinking by allowing pupils to observe situations or objects that are otherwise impossible, or impractical and inconvenient to do in reality. For example, many of the simulation programmes out there allows learners to visualise what if scenarios, such as that of learning about earthquakes. If we were to wait for it to happen in reality to observe, there will hardly be enough opportunities to study it, whereas a simulation programme can afford learners the ability to study conditions of what causes the earthquakes. However that being said, models are ultimately not the real thing and cannot recreate actual human experiences. Hence if the goal of the lesson is to understand the effects of earthquakes on people, models can only at most inform learners of the scientific why and how, but is otherwise detached from the real extent of devastation felt by people.
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