Monday, November 24, 2014

Superior student learning is a product of teachers structuring classes with the best learning methods and students utilizing them by having motivation to succeed

In regards to student learning, the responsibility is in both the teacher's and student's hands. The graphic to the right demonstrates this dual responsibility.

At the top of the chart during focus lessons and guided instruction, there is much teacher responsibility and little student responsibility. The responsibility distribution is completely switched at the bottom of the chart during collaborative and independent work, where there is little teacher responsibility and much student responsibility.

To maximize student learning, the best methods of learning must be applied. Much research has been completed on aspects of student learning, but their findings have not been utilized universally in today's classrooms.

Teachers must structure classes, tests, and group projects to benefit the students. However, students need to study correctly, get corrective feedback, and put in sufficient effort to succeed.

The main aspects of student learning studied were testing versus restudying, test format and corrective feedback, cooperative learning, the blended learning environment, and obstacles to student learning. These obstacles include sleep patterns and teaching to the test. The following is a summary of the key information learned:
  1. Taking intervening tests improve long term retention better than repeated studying
  2. When corrective feedback is given, short answer tests are more effective than multiple choice
  3. Cooperative learning increases student achievement only when there are group rewards based on group members' individual learning
  4. In a blended learning environment, students' satisfaction was positively correlated with their perception of collaborative learning
  5. When teachers only teach items on their test, students' overall learning is decreased

Taking practice tests is better than repeated studying for student's long term retention because students can practice the skills they need while they are learning


In two experiments performed by Henry L. Roediger, III and Jeffrey D. Karpicke of Washington University in St. Louis, results indicated taking tests before taking a final exam at least two days later was more beneficial than restudying the material. This has been attributed to testing's ability to provide practice for the necessary skills to succeed.

These results indicate that to improve student learning, students should take practice tests before their actual tests, and teachers should make these practice tests available or do them in class. If this is not done, students will start to forget concepts very quickly, as shown in the graph on the right.

University of Maryland Accounting Professor Stephen Brown agrees with this responsibility that teachers have to improve student learning. He gives many quizzes in class before each test and also provides his students with past test questions for them to review.

In the following video, Brown discusses his logic behind feeling great responsibility to improve student learning.


The experiment had students read passages and then either take a test or restudy. A final test was given later. When this final test was given just five minutes later, restudying was more helpful.

However, when the final was given two days and one week later, testing proved to be more beneficial. These options test long term retention, whereas the final test five minutes later focuses on short term retention. Clearly long term retention is more crucial to student learning.

Short answer quizzes with feedback is the best method for learning due to its greater retrieval demands and the opportunity to correct mistakes


Another study by Sean H. K. Kang and colleagues investigated short answer and multiple choice test format with the condition of corrective feedback. They found that when there was no feedback, those who took an intervening multiple choice test before the final test scored better than those with an intervening short answer test.

However, with corrective feedback, an intervening short answer test was more beneficial and this final exam score was the best overall out of all the conditions.

With this knowledge, it would make sense then that every class should be giving short answer quizzes with feedback. However, this is not the case very often, as professors tend to give multiple choice tests more often because the grading is much quicker.

In the video below, Stephen Brown articulates this point, and adds that the only place he would be able to utilize short answer quizzes and tests would be in small class sections.


If it is not realistic to give short answer quizzes in class, the professors should at least give corrective feedback because the final exam scores were better with this condition regardless of test format. Short answer intervening tests with corrective feedback is the overall best method for learning because short answer tests have greater retrieval demands than multiple choice tests.

Thus, there is a more thorough encoding of feedback with a short answer test than with a multiple choice test. However, without corrective feedback, short answer tests can be detrimental because their scores are usually lower than multiple choice tests.

Thursday, October 30, 2014

Poor playing by the NFL New York Jets' quarterback Geno Smith leads to a switch to the back-up quarterback Michael Vick

The Jets, specifically head coach Rex Ryan, have lost patience with their starting quarterback Geno Smith. His poor play is a big reason the Jets stand with a dismal 1-7 record. Michael Vick, a 34 year old, will start for the Jets on Nov. 2 against the Kansas City Chiefs.

This decision questions the Jets’ plans for Smith in the future, for he was supposed to be their “franchise quarterback”, starting for the team for years. Ryan would not share if the quarterback change was permanent, and he claims the Jets organization still views Smith the same way after this move.

There may be some hope from the Jets that Smith will start playing up to his potential, but he has not shown much promise over his career. After Smith came into the National Football League in 2013, he has only gone 9-15, throwing 31 interceptions total in those games. In nine of those 24 starts, Smith has thrown multiple interceptions.

Smith is coming off one of those games, throwing three interceptions in just the first quarter last week against the Buffalo Bills. Jets’ general manager, John Idzik, called the performance a “cause for concern, an eye opener”. Idzik had been a supporter of Smith, for he did draft him, but even he may be starting to lose faith in Smith.

Social media sharing links and NFL statistics and podcasts personalize the article for digital users and football fanatics

This article is a great example of personalization because there are options to share the article via Facebook and Twitter, comment about it, or email the article to someone. These options suit the variety of users that wish to do more with the article in their own personal way. Digital users most likely use all of these platforms, and they would be pleased to find the article have such convenient sharing options.

In addition, the article is personalized for NFL fans. Users reading about a quarterback change for a bad team are most likely football fanatics. Thus, the article placed interesting statistics about the worst quarterback games statistically since the beginning of the 2013 season. There was also a football podcast in the article for fans that wanted even more information than the article summarized. 

Options to control video speed and offer article comments give users more content control, and thus more interactivity

The article addresses this interactivity component by including a video, podcast, and the option to leave a Facebook comment. The video and podcast give the user options to pause, fast-forward, or simply ignore supplemental information about the decision of the Jets to change quarterbacks. They offer opinions of other reporters and analysts aside from the author about the reasons behind the quarterback switch.

Finally, the option to leave a comment is essential to letting the user interact with other users and with the author of the article about the topic. The purpose of interactivity is to get the user to engage in the material. This is achieved by giving the user control over the content they see and offering ways for them to become sources of the content. Therefore, videos, blogs, and comments are perfect examples of interactivity.

Information in text and graphics go together to enhance user understanding of the switch to the back-up quarterback

Many factors went in to the Jets’ decision to change quarterbacks, and this is explained effectively with the coordination of the text and graphics in the article. The graphics elaborate on the topics of the text located next to the graphic.

For example, in the picture to the right, the text mentions Geno Smith’s high interception total and how the Jets’ general manager has begun to lose faith in Smith. The graphic then supplements these points with statistics that show Smith has had some of the worst games by a quarterback in history.

Thus, the Jets’ are moving on to their backup Michael Vick, who is also highlighted in the text. When contiguity, the coherence of the text and graphics, is achieved, the user is able to develop a connection between the two formats of information. Clearly in this case the user is able to use both types of information together to understand the message of the article.

Potential kick-outs for the article are mostly limited, but a link to a related story exists that could drive the reader away

The article avoids many potential kick-outs by not having overwhelming amounts of information, ads, long or slow loading videos, broken links, and information that’s hard to comprehend.

Having a Facebook comments section, which the article has, could be overwhelming with the number of comments, resulting in a potential kick-out. However, the article limits the amount of comments initially shown on the page and gives the option to show more.

One possible kick-out on the page does exist near the beginning of the article. There is a link to another story on ESPN that discusses this same topic of the Geno Smith benching. This should absolutely be moved away from the main content of the article, so that the user does not simply choose to read that article instead.

A kick-out is something on a web page that increases the chance of a user leaving the page. Articles are written, edited, and designed to attract and keep attention on their page, so a kick-out prevents this goal from being achieved. Clearly the link to another article could result in the user leaving the current page.

University of Maryland Professor Ved Lekic is awarded fellowship grant for North America seismic wave research

In recognition of his efforts to integrate computer science and geological studies, Lekic joined the ranks of 17 other early career U.S. scientists and engineers who were awarded a Packard Fellowship for Science and Engineering last week.

Lekic is now one of five alumni faculty members who have received the award while at this university, and he will be given access to unrestricted funds of $875,000 over a five-year period to support his extensive research on Earth’s inner structure.

“The great thing about this fellowship is its flexibility to go chase a really good idea to wherever it leads,” said Orr, a Stanford University professor. “It is an incredibly valuable fund and gives the researchers an opportunity to take off with a good idea instead of waiting a year or more for federal money.”

Seismic wave EarthScope program research helps form information about the Earth's structure

Lekic’s research is based on ground vibration recordings, which he and his students use to detect the scattering of seismic waves across the North American tectonic plate. In conjunction with the National Science Foundation’s EarthScope Facility network, the data is collected from the 49 states and Puerto Rico and makes up about 3.8 million square miles, Lekic said.

From this data, Lekic is creating a map that will not only cover all 48 contiguous states, Alaska and Puerto Rico, but also dive deep into the Earth’s crust and core.

Lekic has already used the seismic information to investigate why and how the crust moves over the Earth’s mantle. As of now, the deepest any machine has been able to dig was about 12 kilometers into the Earth’s crust, a minuscle fracture of the roughly 6,730 kilometers it takes to get to the Earth’s core. Using the seismic information helps geologists see the shapes and sizes of the Earth’s layers.

“What we do is comparable to how an ultrasound let’s us see through our bodies,” Lekic said. “But this lets us see through the Earth.”

Nearly 2 million data lines fill the screen of Vedran Lekic’s computer every day, each representing seismic waves that are detected from of the more than 1,700 seismic stations around the U.S.

“EarthScope is kind of like our Apollo mission, but not as costly,” Lekic said

Lekic teams up with McDonough to further study tectonic plate energy in order to better understand the Earth

Lekic and McDonough are attempting to harness that energy to create another way to build a model of the Earth.

“We are both interested in the energy that moves the tectonic plates and creates the magnetic shield around the planet,” geology professor William McDonough said.

Now that a large fund has been granted to his work, he hopes to spend more time plotting the seismic information in graphs and models so that he may better understand the Earth, Lekic said.

Lekic's plate tectonics and neutrino geoscience research primed him to be the best Packard Fellowship candidate

“If you look at the field of those who get it and try to figure out from their research summaries and letters which are the strongest candidate, it’s a difficult task,” said Franklin Orr, chairman of the Packard Fellowship panel. “We always run out of fellowships before we run out of wonderful people to give them too.”

As a doctoral student at the University of California, Berkley, Lekic formulated higher-resolution images of the Earth’s mantle structure, stemming from his creation of a global seismic velocity model. Not only is the model able to give geologists a better understanding of plate tectonics, but it also helps explain the movement of continental plates and their evolution, Lekic said.

Other than his seismology research contributions, Lekic is also a forerunner in the new geological field of neutrino geoscience.

Neutrinos are a type of electrically neutral subatomic particle that are created during radioactive decay or some kinds of nuclear reactions. The particle, which was only discovered geologically in 2005 and physically detected for the first time last year, moves through every kind of object, McDonough said.

Thursday, October 16, 2014

While most prevalent in boy's collision sports, high school concussions happen to both genders in many different sports

Andrew E. Lincoln and colleagues researched high school concussions for an eleven year time period from 1997 to 2008. They observed 2651 total concussions: a incident rate of 0.24 per 1000 athletic exposures. Concussions occurred in all twelve sports that were observed. There were significant differences in the overall concussion rates between genders. Boys accounted for 74.9% of concussions, while only having 53.4% of athletic exposures. This led to their incident rate of 0.34 per 1000 athletic exposures compared to the girls' 0.13 rate. However, much of this difference is due to the boys' collision sports of football and lacrosse, which were the top two concussion sports. When looking at similar sports between girls and boys, such as soccer, basketball, and baseball/softball, the concussion rates were higher for girls in every instance. Lacrosse does not apply to this comparison because boy's lacrosse has rules that allow for many more collisions than girl's lacrosse. The allocation of concussions between the sports observed is split much more evenly between the girls' sports. Four sports (soccer, cheerleading, basketball, lacrosse) had at least 17% of the concussions for girls, whereas only two boys' sports (football, lacrosse) had over 6% of the concussions.

Tuesday, October 14, 2014

Interactivity