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Why Neutralize? Impact on Health and the Environment
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The aim of this lesson is to introduce the concept of Neutralization and its application in our daily lives. Students are encouraged to construct their knowledge of Neutralization through brainstorming sessions, experiments, and mind mapping. This video lesson presents a series of stories relating to Neutralization—beginning with a story of a girl being cured from a stomach ache with the help of Neutralization. Prerequisites for this lesson are knowledge of the basic concept of Neutralization, chemical equations and the pH indicator scale. The lesson will take about 50 minutes to complete, but you may want to divide into two classes if the activities require more time.

Subject:
Chemistry
Physical Science
Material Type:
Lecture
Provider:
MIT
Provider Set:
MIT Blossoms
Author:
Hazilah Abdullah, Muhamad Jamil Mustafa
Date Added:
02/12/2015
Why Pay More?
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This lesson is an introduction to Multiple Regression Analysis or MRA, a statistical process used widely in many professions to estimate the relationship among variables. The aim of this video is to make it easier for students to understand the introduction to the concept of MRA based upon a property valuation setting. In order to facilitate students’ understanding of this, a scaffolding method is used whereby students are first exposed to basic equations. Then they will be introduced to the concept of variables, teaching them to calculate property value based on only 2 variables. Their understanding is further enhanced by exposing them to multiple variables related to property valuation. Finally, they are asked to calculate property value based on multiple variables. It is shown in this video that finding the value of two variables is possible using the paired comparison method, but that the same method cannot be applied if we have more than 2 equations; that is when Multiple Regression Analysis is needed. MRA can solve problems related to more than 2 equations. A prerequisite for students is an understanding of basic statistics such as total, average, mod, mean and median.

Subject:
Mathematics
Material Type:
Lecture
Provider:
MIT
Provider Set:
MIT Blossoms
Author:
Dzurllkanian Daud, Abdul Rahim b Hj Salam, Abdul Rahman Tamuri, Faizal Yamimi Mustaffa, Ghazali bin Bunari, Wan Ibrisam Fikry bin Wan Ismail, Mustafa bin Omar, Johari Surif, Norhaya Kamarudin
Date Added:
02/13/2015
Will an Ice Cube Melt Faster in Freshwater or Saltwater?
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With an often unexpected outcome from a simple experiment, students can discover the factors that cause and influence thermohaline circulation in our oceans. In two 45 minute class periods, students complete activities where they observe the melting of ice cubes in saltwater and freshwater, using basic materials: clear plastic cups, ice cubes, water, salt, food coloring, and thermometers. There are no prerequisites for this lesson but it is helpful if students are familiar with the concepts of density and buoyancy as well as the salinity of seawater. It is also helpful if students understand that dissolving salt in water will lower the freezing point of water. There are additional follow up investigations that help students appreciate and understand the importance of the ocean’s influence on Earth’s climate.

Subject:
Physical Science
Physics
Material Type:
Lecture
Provider:
MIT
Provider Set:
MIT Blossoms
Author:
William Andrake
Date Added:
02/12/2015
Writing and Rhetoric: Designing Meaning
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This course takes rhetoric as a system for designing meaning that helps us understand complex situations and ideas, enlighten and persuade others to act, and thus reshape our world. We’ll study rhetoric systematically and empirically, both analyzing how it works on us as readers, and testing how we can make informed rhetorical choices as we design our own texts.

Subject:
Arts and Humanities
Business and Communication
Communication
Literature
Philosophy
Material Type:
Full Course
Provider:
MIT
Provider Set:
MIT OpenCourseWare
Author:
Lane, Suzanne
Date Added:
09/01/2016
You Can’t Always Get What You Want: A Lesson in Human Evolution
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This lesson introduces students to the concepts of evolution, specifically the evolution of humans. So often our students assume that humans are well adapted to our environments because we are in control of our evolutionary destiny. The goal is to change these types of misconceptions and get our students to link the concepts learned in their DNA, protein synthesis, and genetics units to their understanding of evolution. Students will also discover that humans are still evolving and learn about the traits that are more recent adaptations to our environment. The lesson is designed to take two one-hour class periods to complete. The activities will allow students to draw connections between environmental pressures and selected traits, both through data analysis and modeling. Most activities can be done without any special materials, although the Modeling Natural Selection activity needs either a tri-colored pasta, or tricolored beans, to be completed effectively.

Subject:
Genetics
Life Science
Material Type:
Lecture
Provider:
MIT
Provider Set:
MIT Blossoms
Author:
Julie Boehm
Date Added:
02/12/2015