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Lam Meng Hwee

 

Briefing Document: Tank Concentration Simulation Applet

1. Introduction

This document provides a summary and analysis of the "Tank Concentration JavaScript HTML5 Applet Simulation Model" by Lam Meng Hwee, as presented on the Open Educational Resources / Open Source Physics @ Singapore website. The applet is designed as an interactive learning tool for exploring the concept of first-order differential equations, specifically focusing on concentration changes within a tank. The page also provides a plethora of other resources from Open Source Physics @ Singapore.

2. Main Themes and Ideas

• First-Order Differential Equations: The core mathematical concept behind the simulation is the use of first-order differential equations to model the changing concentration of a substance within a tank over time. This is a fundamental concept in various scientific fields.
• Interactive Learning: The applet is designed as an interactive simulation, likely allowing users to manipulate parameters (e.g., inflow rates, outflow rates, initial concentrations, tank volumes) and observe the resulting changes in concentration. This hands-on approach is geared towards enhancing conceptual understanding of the mathematical model. The webpage's embed code <iframe width="100%" height="100%" src="https://iwant2study.org/lookangejss/00workshop/2017FelixPaco/day4/ejss_model_Tank/Tank_Simulation.xhtml " frameborder="0"></iframe> allows for easy integration into other webpages.
• Open Educational Resource (OER): The applet is presented as an open educational resource, indicating its free availability for educational purposes. This promotes widespread access to and use of the educational tool, aligning with the goals of Open Source Physics.
• JavaScript/HTML5: The applet is implemented using JavaScript and HTML5, which means that it will run in modern web browsers without requiring special plugins. This facilitates accessibility across various platforms and devices.

3. Key Facts and Information

• Title: "First Order DE (Concentration Changes in Tank)"
• Author: Lam Meng Hwee
• Creation Date: 2017
• License: Released under a Creative Commons license, presumably allowing for reuse and adaptation with proper attribution. The bottom of the page states: "Contents are licensed Creative Commons Attribution-Share Alike 4.0 Singapore License."
• Platform: JavaScript HTML5 Applet
• Accessibility: Embeddable in other webpages via an iframe.
• Location: https://iwant2study.org/lookangejss/00workshop/2017FelixPaco/day4/ejss_model_Tank/Tank_Simulation.xhtml

4. Quotes from the Source

• "First Order DE (Concentration Changes in Tank)" - This clearly states the mathematical focus of the simulation.
• "Lam Meng Hwee © 2017, Lam Meng Hwee. Released under a license." - Provides attribution and licensing information
• "Embed this model in a webpage: " - The inclusion of the iframe code highlights the applet's ease of integration.

5. Related Resources and Context

The page containing the tank simulation is not an isolated resource. It is embedded within a larger collection of resources, mostly physics and math related simulations, developed under the Open Source Physics @ Singapore initiative. The inclusion of a myriad of listed links to other simulation applets, blog posts, and workshop materials shows the project's goal of developing and sharing educational tools within the educational community. Here are some important related resources: * Storm Water Pit Simulator: A related simulation that is also linked is the "Storm Water Pit Simulator JavaScript HTML5 Applet Simulation Model" by Vincent Lew, which likely covers similar concepts but in a different context.

• Easy Java/JavaScript Simulations: The mention of "Easy Java Simulation" and "EasyJavaScriptSimulation" throughout the resource listing suggest that the simulation and many of the others on the site were created using the EJS framework.
• Workshops and Events: The numerous links to workshops and talks (e.g. "20170418 Creating Creating ICT Learning Experiences for Kinematics-Dynamics-Energy (Part 4)", "20121201 Interactive Workshop ICCE2012 Designing Open Source Computer Models for Physics by Inquiry using Easy Java Simulation") indicate that the development and implementation of this simulation, and other projects on this page, is part of a larger initiative to incorporate interactive simulations in education through training and resource sharing.
• Various Topics: The wide array of resources demonstrate the broad range of topics covered by this Open Educational Resources initiative, including physics, mathematics, chemistry, and computer science.

6. Implications for Use

This simulation would be a valuable tool for educators teaching topics in:

• Calculus, particularly related to differential equations.
• Chemistry, specifically for modeling concentrations in chemical processes.
• Environmental science, where modeling flows and concentrations is essential.
• Physics, where mathematical models often apply to various systems.

The applet provides a visual and interactive representation that can help students grasp abstract mathematical concepts more easily. The open access nature of the resource makes it highly accessible for educators to include it in lessons and for independent learning.

7. Conclusion

The "Tank Concentration JavaScript HTML5 Applet Simulation Model" is a valuable open educational resource that leverages interactive simulation to teach a key concept related to first-order differential equations. Its accessibility, ease of integration, and clear focus make it a beneficial learning tool for various STEM disciplines. The context of the resource within a broader open source physics initiative further enhances its value by promoting the use of similar tools in education and fostering a community that creates and shares these resources.

 

Tank Concentration Simulation Study Guide

Quiz

Instructions: Answer the following questions in 2-3 sentences each.

1. What type of differential equation is used to model the concentration changes in the tank simulation?
2. Who is the author of the Tank Concentration JavaScript HTML5 Applet Simulation Model?
3. Under what license is the Tank Concentration model released?
4. What programming language is used to create this simulation?
5. What is the primary purpose of the Tank Concentration simulation model?
6. Where can you embed this model?
7. Besides the tank concentration model, what are two other types of simulations available on the Open Educational Resources/Open Source Physics @ Singapore site?
8. What does the term "Open Educational Resources" refer to in this context?
9. What is the significance of the Easy JavaScript Simulation tool mentioned in the context of the website's workshops?
10. What is one way the site promotes interactive learning?

Quiz Answer Key

1. The model uses a first-order differential equation to describe how the concentration of a substance changes within the tank over time. This equation considers factors like the inflow rate, outflow rate, and the concentration of the substance entering the tank.
2. The Tank Concentration JavaScript HTML5 Applet Simulation Model was created by Lam Meng Hwee.
3. The model is released under a Creative Commons Attribution-Share Alike 4.0 Singapore License.
4. The simulation is built using JavaScript and HTML5, which allows it to run in web browsers without requiring additional software.
5. The primary purpose of the simulation is to visually demonstrate and allow users to interact with the concepts of concentration changes in a tank using a first order differential equation.
6. The model can be embedded in a webpage using an iframe, as provided by the embed code.
7. Two other types of simulations available include the "Storm Water Pit Simulator" and the "Projectile Motion with System of Masses and Spring" simulations.
8. "Open Educational Resources" (OER) refers to educational materials that are freely available for use, adaptation, and sharing. In this context, it denotes that the simulation and its resources can be used and adapted without cost or legal restrictions beyond those specified in the licensing.
9. The Easy Java Simulation tool allows for the creation of interactive computer models for physics. The workshops using this tool demonstrate an effort to build simple physics models for inquiry based learning.
10. The site promotes interactive learning through the use of JavaScript HTML5 Applet Simulation Models which provide hands on simulations for various educational topics.

Essay Questions

Instructions: Answer the following essay questions using information from the source material.

1. Discuss the significance of using simulations like the Tank Concentration model in teaching science or mathematics. How does it compare to traditional methods, and what are its advantages?
2. Analyze the role of Open Educational Resources in modern education. How does the availability of resources like the Tank Concentration model impact teachers and students?
3. Explore how the various simulations and resources available on the Open Educational Resources/Open Source Physics @ Singapore site contribute to a broader understanding of STEM subjects, using specific examples from the provided material.
4. Describe the process of creating interactive learning experiences, based on what can be inferred from the provided text. Use examples from the provided list of resources.
5. How can the approach taken by Open Educational Resources / Open Source Physics @ Singapore serve as a model for other educational institutions or communities that want to develop similar programs?

Glossary of Key Terms

• Applet: A small application, often written in Java or JavaScript, that runs within a web browser. In this context, it refers to the interactive simulations.
• First-Order Differential Equation: A type of equation that describes a relationship between a function and its first derivative. In the simulation, it models the rate of change of concentration in the tank.
• HTML5: The latest version of HTML, the standard markup language for creating web pages. It allows for the embedding of multimedia and the creation of interactive elements.
• JavaScript: A programming language that is often used in web development to create dynamic content, like simulations and animations.
• Open Educational Resources (OER): Educational materials that are freely available for anyone to use, adapt, and share without cost or legal restrictions beyond those specified in the licensing.
• Simulation: A computer program that models a real-world system or process, allowing users to observe and interact with the model.
• Easy Java Simulation (EJS): A tool used to create interactive computer models, particularly for physics education. It is mentioned as a common tool for workshops on the website.
• Embed: To include something, such as a piece of code, within another document or page, such as inserting an iframe code into a website.
• iFrame: An HTML element used to embed another HTML document within the current one. This allows for embedding of simulations or other webpages into a different website.
• Creative Commons Attribution-Share Alike 4.0 Singapore License: A license that permits users to copy, distribute, remix, adapt, and build upon the material, provided they attribute the original author and distribute their contributions under the same license.

 Version:

1. http://opensourcephysicssg.blogspot.sg/2017/10/first-order-de-concentration-changes-in.html

Other Resources

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FAQ

• What is the "Tank Concentration JavaScript HTML5 Applet Simulation Model" and what does it simulate?
• The "Tank Concentration JavaScript HTML5 Applet Simulation Model" is an interactive simulation, developed by Lam Meng Hwee, that demonstrates how the concentration of a substance changes within a tank over time. This is achieved by using a first-order differential equation to model the mixing process as substances enter and leave the tank. The simulation is typically used to visualize and understand dynamic systems, specifically related to concentration changes in chemistry or similar contexts.
• Who created the Tank Concentration Simulation, and what is the licensing for its use?
• The simulation was created by Lam Meng Hwee, with copyright dating to 2017. The simulation is released under a Creative Commons Attribution-Share Alike 4.0 Singapore License, permitting free use, adaptation and sharing, provided proper attribution and the use of a similar license for derivative works. However, commercial use of the underlying EasyJavaScriptSimulations Library requires a separate license directly from the library's owners (fem@um.es).
• Where can I find and use the Tank Concentration simulation?
• The simulation is embedded within a web page using an iframe tag, allowing easy integration into other websites. The specific URL provided in the source (https://iwant2study.org/lookangejss/00workshop/2017FelixPaco/day4/ejss_model_Tank/Tank_Simulation.xhtml) points to where the simulation can be viewed and interacted with.
• What other types of simulations and interactive learning tools are available from the same source?
• This source offers a wide array of interactive simulations covering topics ranging from physics, math and chemistry. Examples include projectile motion, wave phenomena, electric fields, magnetic fields, various mathematical concepts like fractions and geometry, and even simulations for more advanced physics concepts such as Simple Harmonic Motion, radioactive decay and fluid dynamics. Many of these are HTML5 applets, made with Easy JavaScript Simulations (EJSS) or other technologies.
• What is Easy JavaScript Simulations (EJSS), and how is it related to these models?
• Easy JavaScript Simulations (EJSS) is a tool or library used to create the interactive, computer-based models, and simulations listed. EJSS allows developers to create models that simulate real-world phenomena and make them interactive in a web browser. Many of the simulation models in the provided list were built using this technology, such as the Tank Concentration model.
• Who are the primary contributors and developers of these interactive learning resources?
• The content creators are based in Singapore, with Lam Meng Hwee as a key figure. Also listed are figures such as Wolfgang Christian, Michael R. Gallis, Fu-Kwun Hwang, Leong Tze Kwang and others. The educational resources are developed within the Open Educational Resources / Open Source Physics @ Singapore initiative. The simulations are often used in physics and science education within Singapore's Ministry of Education (MOE).
• What are some of the specific educational initiatives and awards related to this work?
• The Open Source Physics at Singapore project has garnered recognition such as the UNESCO King Hamad Bin Isa Al-Khalifa Prize for the Use of ICTs in Education, the Ministry of Education Outstanding Innovator Award, and the Public Service 21 ExCEL Awards, highlighting the project's focus on innovation in education using interactive technologies. Also mentioned are project-based research grants and the use of open-source physics tools in educational workshops and conferences.
• How are these simulations used in a classroom setting or in student learning?

The simulations are used to visualize complex concepts and promote inquiry-based learning. Teachers use these tools to enhance their instruction, and they enable students to explore scientific principles, such as by manipulating parameters, observing the changes, and investigating data. The models are also used to complement hands-on experiments or as visual aids during lectures. These resources also foster independent learning, letting students explore the phenomena at their own pace.