Heimmodalityredundancy

100 %
0 %
Information about Heimmodalityredundancy
Education

Published on March 2, 2009

Author: bethheim

Source: authorstream.com

Principles of Modality and Redundancy : Principles of Modality and Redundancy Beth Heim EdTech 513 Objective : Objective Following this presentation, learners will be able to identify elements of the modality and redundancy principles. Modality Principle : Modality Principle If text is placed in a presentation, the presenter should not read the text. On screen text is not as effective as speech. There are limitations to the modality principle. There may be times when the words spoken should remain visible to the learner for memory support. (Clark & Mayer p. 104) One of the following examples does not follow the modality principle. Modality PrincipleExample 1 : Modality PrincipleExample 1 The Pacific Ring of Fire is an area of frequent earthquakes and volcanic eruptions encircling the basin of the Pacific Ocean. In a 40,000 km horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and/or plate movements. The Ring of Fire has 452 volcanoes and is home to over 75% of the world's active and dormant volcanoes. 90% of the world's earthquakes and 80% of the world's largest earthquakes occur along the Ring of Fire. Modality PrincipleExample 2 : Modality PrincipleExample 2 The Ring of Fire is an area with frequent volcanic eruptions and earthquakes. Modality PrincipleExample 3 : Modality PrincipleExample 3 The Pacific Ring of Fire is an area of frequent earthquakes and volcanic eruptions encircling the basin of the Pacific Ocean. In a 40,000 km horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and/or plate movements. The Ring of Fire has 452 volcanoes and is home to over 75% of the world's active and dormant volcanoes. 90% of the world's earthquakes and 80% of the world's largest earthquakes occur along the Ring of Fire. Quiz Question 1 : Quiz Question 1 Which of the modality principle examples is the most effective presentation method? Explain your answer. Quiz Question 1 : Quiz Question 1 The example showing the most effective use of the modality principle is example two. It shows a graphic with the narrator explaining the slide. Example one is also effective, but not as effective as example two according to the modality principle. Example three does not follow the modality principle because the narrator is reading the onscreen text to the learner. Redundancy Principle : Redundancy Principle Principle 1: Do not add on screen text to narrated graphics. Follow this especially when words and pictures are presented simultaneously at a fast pace. Principle 2: Consider adding onscreen text to narration in special situations. Special situations would be the following: There is no pictorial presentation. There is ample opportunity to process the graphics. The learner has more difficulty processing spoken words than printed text. (Clark and Mayer p125) One of the following examples does not follow the redundancy principle. Redundancy PrincipleExample 1 : Redundancy PrincipleExample 1 Tornadoes that form from a supercell thunderstorm are the most common, and often the most dangerous. A supercell is a long-lived and highly organized storm feeding off an updraft that is tilted and rotating. This rotating updraft - as large as 10 miles in diameter and up to 50,000 feet tall - can be present as much as 20 to 60 minutes before a tornado forms. Scientists call this rotation a mesocyclone when it is detected by Doppler radar. The tornado is a very small extension of this larger rotation. Most large and violent tornadoes come from supercells. Redundancy PrincipleExample 2 : Redundancy PrincipleExample 2 Tornadoes that form from a supercell thunderstorm are the most common, and often the most dangerous. A supercell is a long-lived and highly organized storm feeding off an updraft that is tilted and rotating. This rotating updraft - as large as 10 miles in diameter and up to 50,000 feet tall - can be present as much as 20 to 60 minutes before a tornado forms. Scientists call this rotation a mesocyclone when it is detected by Doppler radar. The tornado is a very small extension of this larger rotation. Most large and violent tornadoes come from supercells. Redundancy PrincipleExample 3 : Redundancy PrincipleExample 3 Quiz Question 2 : Quiz Question 2 Which of the redundancy principle examples is the most effective presentation method? Explain your answer. Quiz Question 2 : Quiz Question 2 Example 3 is the best example of following the redundancy principle. The graphic is shown and the learner hears the narration, but does not need to process the text. Example two shows the text and graphic with no narration. Without the speech added, the learner is more likely to retain the information. Example one contains the graphic, text, and narration. This is an example of not following the redundancy principle. This is an overload for the learner and the result is the student retaining less of the information presented. Resources : Resources Graphics http://commons.wikimedia.org Text: Clark, R. & Mayer, R. (2008) e-Learning and the science of instruction, San Francisco: Pfeiffer. Wikipedia (2009). Pacific Ring of Fire. Retrieved March 1, 2009 from http://en.wikipedia.org/wiki/Pacific_Ring_of_Fire NOAA (2006). Tornado Basics. Retrieved March 1, 2009 from http://www.nssl.noaa.gov/primer/tornado/tor_basics.html

Add a comment

Related presentations