The Aftermath of Calculator Use in College Classrooms

Math instructors promoting calculator usage in college classrooms may want to rethink their teaching strategies, says Samuel King, postdoctoral student in the University of Pittsburgh's Learning Research & Development Center. King has proposed the need for further research regarding calculators' role in the classroom after conducting a limited study with undergraduate engineering students published in the British Journal of Educational Technology.

"We really can't assume that calculators are helping students," said King. "The goal is to understand the core concepts during the lecture. What we found is that use of calculators isn't necessarily helping in that regard."

Together with Carol Robinson, coauthor and director of the Mathematics Education Centre at Loughborough University in England, King examined whether the inherent characteristics of the mathematics questions presented to students facilitated a deep or surface approach to learning. Using a limited sample size, they interviewed 10 second-year undergraduate students enrolled in a competitive engineering program. The students were given a number of mathematical questions related to sine waves -- a mathematical function that describes a smooth repetitive oscillation -- and were allowed to use calculators to answer them. More than half of the students adopted the option of using the calculators to solve the problem.

"Instead of being able to accurately represent or visualize a sine wave, these students adopted a trial-and-error method by entering values into a calculator to determine which of the four answers provided was correct," said King. "It was apparent that the students who adopted this approach had limited understanding of the concept, as none of them attempted to sketch the sine wave after they worked out one or two values."

After completing the problems, the students were interviewed about their process. A student who had used a calculator noted that she struggled with the answer because she couldn't remember the "rules" regarding sine and it was "easier" to use a calculator. In contrast, a student who did not use a calculator was asked why someone might have a problem answering this question. The student said he didn't see a reason for a problem. However, he noted that one may have trouble visualizing a sine wave if he/she is told not to use a calculator.

"The limited evidence we collected about the largely procedural use of calculators as a substitute for the mathematical thinking presented indicates that there might be a need to rethink how and when calculators may be used in classes -- especially at the undergraduate level," said King. "Are these tools really helping to prepare students or are the students using the tools as a way to bypass information that is difficult to understand? Our evidence suggests the latter, and we encourage more research be done in this area."

King also suggests that relevant research should be done investigating the correlation between how and why students use calculators to evaluate the types of learning approaches that students adopt toward problem solving in mathematics.

Academic and Fiscal Benefits of Universal Preschool

This brief is authored by Dr. William Mathis, managing director of the National Education Policy Center, housed at the University of Colorado Boulder School of Education.

There is near-universal agreement among researchers “that high-quality preschool programs more than pay for themselves in economic and social benefits,” Mathis writes. Indeed, high-quality preschool for at least two years has been found to close as much as half the achievement gap. Such preschool participation is also associated with a wide range of more positive adult outcomes, including less drug use, less welfare depen
dency, higher graduation rates, higher college attendance, and higher employment.

Despite these demonstrated outcomes and the increase in children attending pre-school, “in inflation adjusted dollars, overall funding per child served is lower than a decade ago,” Mathis writes. For preschool to reap its proven substantial benefits, lawmakers must assure that the programs are of high quality and are adequately supported.

The brief explains the key elements of a quality pre-school program. It also discusses research findings concerning basic issues such as the entrance age for preschool, comparisons of center-based and home-based programs, and whether preschool should be universal or targeted by socioeconomic group.

Link Found Between Child Prodigies and Autism

A new study of eight child prodigies suggests a possible link between these children’s special skills and autism.

Of the eight prodigies studied, three had a diagnosis of autism spectrum disorders. As a group, the prodigies also tended to have slightly elevated scores on a test of autistic traits, when compared to a control group.

In addition, half of the prodigies had a family member or a first- or second-degree relative with an autism diagnosis.

The fact that half of the families and three of the prodigies themselves were affected by autism is surprising because autism occurs in only one of 120 individuals, said Joanne Ruthsatz, lead author of the study and assistant professor of psychology at Ohio State University’s Mansfield campus.

“The link between child prodigies and autism is strong in our study,” Ruthsatz said. “Our findings suggest child prodigies have traits in common with autistic children, but something is preventing them from displaying the deficits we associate with the disorder.”

The study also found that while child prodigies had elevated general intelligence scores, where they really excelled was in working memory - all of them scored above the 99th percentile on this trait.

Ruthsatz conducted the study with Jourdan Urbach of Yale University. Their results were published in a recent issue of the journal Intelligence.

For the study, the researchers identified eight child prodigies through the internet and television specials and by referral. The group included one art prodigy, one math prodigy, four musical prodigies and two who switched domains (one from music to gourmet cooking, and one from music to art). The study included six males and two females.

The researchers met with each prodigy individually over the course of two or three days. During that time, the prodigies completed the Stanford-Binet intelligence test, which included sub-tests on fluid reasoning, knowledge, quantitative reasoning, visual spatial abilities and working memory.

In addition, the researchers administered the Autism-Spectrum Quotient assessment, which scores the level of autistic traits. The prodigies’ scores on the test were compared to a control group of 174 adults who were contacted randomly by mail.

Ruthsatz said the most striking data was that which identified autistic traits among the prodigies.

The prodigies showed a general elevation in autistic traits compared to the control group, but this elevation was on average even smaller than that seen in high-functioning autistic people diagnosed with Asperger’s syndrome.

Autism is a developmental disability characterized by problems with communicating and socializing and a strong resistance to change. People with Asperger’s are more likely than those with autism to have normal intelligence, but tend to have difficulties with social interaction.

The prodigies did score higher than the control group and the Asperger’s group on one subsection of the autism assessment: attention to detail.

“These prodigies had an absolutely amazing memory for detail,” she said. “They don’t miss anything, which certainly helps them achieve the successes they have.”

Ruthsatz said it was not the three prodigies who were diagnosed with autism who were driving this particular finding. In fact, the three autistic prodigies scored an average of 8 on attention to detail, compared to 8.5 for the entire group of prodigies.

On the intelligence test, the prodigies scored in the gifted range, but were not uniformly exceptional. While five of the eight prodigies scored in the 90th percentile or above on the IQ test, one scored at the 70th percentile and another at the 79th percentile.

“Our findings suggest child prodigies have traits in common with autistic children, but something is preventing them from displaying the deficits we associate with the disorder.”

But just as they did in the autism assessment, the prodigies stood out in one of the sub-tests of the intelligence test. In this case, the prodigies showed an exceptional working memory, with all of them scoring above the 99th percentile.

Working memory is the system in the brain that allows people to hold multiple pieces of information in mind for a short time in order to complete a task.

The findings paint a picture of what it takes to create a prodigy, Ruthsatz said.

“Overall, what we found is that prodigies have an elevated general intelligence and exceptional working memory, along with an elevated autism score, with exceptional attention to detail,” Ruthsatz said.

These results suggest that prodigies share some striking similarities with autistic savants - people who have the developmental disabilities associated with autism combined with an extraordinary talent or knowledge that is well beyond average.

“But while autistic savants display many of the deficits commonly associated with autism, the child prodigies do not,” Ruthsatz said. “The question is why.”

The answer may be some genetic mutation that allows prodigies to have the extreme talent found in savants, but without the deficits seen in autism. But the answer will require more study, Ruthsatz said.

“Our findings suggest that prodigies may have some moderated form of autism that actually enables their extraordinary talent.”

Kids need at least 7 minutes a day of 'vigorous' physical activity

Most aren't getting that


Children need a minimum of seven minutes a day of vigorous physical activity, demonstrates recently published findings by University of Alberta medical researchers and their colleagues across Canada.

"If you watch late-night television, or look in the backs of magazines, you'll see magical ads saying you need just 10 minutes a day or five minutes a day of exercise to stay fit. And for those of us in the medical field, we just rolled our eyes at that. But surprisingly, they may actually be right and that's what this research shows," says co-principal investigator Richard Lewanczuk, a researcher with the Faculty of Medicine & Dentistry at the U of A.

"Our research showed children don't need a lot of intense physical activity to get the health benefits of exercise – seven minutes or more of vigorous physical activity was all that was required. But the seven minutes had to be intense to prevent weight gain, obesity and its adverse health consequences. And most kids weren't getting that."

Lewanczuk worked on this study with Jonathan McGavock, his co-principal investigator and former post-doctoral fellow, who now works with the Manitoba Institute of Child Health. They collaborated with Black Gold Regional Schools in Leduc and surrounding communities just south of Edmonton, as well as researchers from the University of Manitoba, Queen's University, the University of Newcastle, and U of A researchers from the Faculty of Medicine & Dentistry, the School of Public Health, Physical Education and Recreation, and Agricultural, Life and Environmental Sciences. The team's findings were recently published in the peer-reviewed journal Archives of Pediatrics & Adolescent Medicine.

More than 600 children, between the ages of nine to 17 from Leduc and surrounding areas, wore monitors that tracked their physical activity levels for seven days. These children also had their weight, waist circumference and blood pressure regularly monitored.

Researchers reviewed the data collected through the Healthy Hearts program via Black Gold Regional Schools and determined the children spent almost 70 per cent of their time doing sedentary activities; nearly 23 per cent was devoted to light physical activity; almost seven per cent to moderate physical activity and 0.6 per cent to vigorous physical activity.

Overall, boys were less sedentary than girls. And the more vigorous the physical activity, the less apt the children were to be overweight. Children who were overweight had improved fitness levels and shrinking waist lines when they increased the amount of time spent doing vigorous activities.

Lewanczuk said the team made some other notable findings including the following: there weren't the expected health benefits from doing only mild or moderate activity even if the time spent doing this type of activity increased. What seemed to be critical was taking part in intense physical activity. For kids who took part in vigorous physical activity that lasted longer than seven minutes, their health benefits were significantly better. And the whole notion of being overweight but fit? The team's data didn't support that finding in children. If children were overweight, they were also unhealthy, Lewanczuk says.

"This research tells us that a brisk walk isn't good enough," says Lewanczuk, a professor in the Department of Medicine who has been studying this topic for eight years. "Kids have to get out and do a high-intensity activity in addition to maintaining a background of mild to moderate activity. There's a strong correlation between obesity, fitness and activity. Activity and fitness is linked to a reduction in obesity and good health outcomes."

Getting young children to make vigorous physical activity part of their daily routines is important, especially considering activity levels in the teenage years drop right off, Lewanczuk says. And previously published research from the same group of children shows kids are more active at school than they are at home.

"Quite often the activity levels on evenings or weekends would be almost flat," he says. "We made the presumption that kids were just sitting in front of a screen the whole time."

Lewanczuk hopes the research findings will help schools decide what type of mandatory physical activity is needed.

He praised the school district involved in the study, noting the research wouldn't have been possible without its support.

Paul Wozny with Black Gold Regional Schools said physical activity is always worthwhile and noted that increased moderate to intense activity was closely associated with lower weights from year to year. He said the Healthy Hearts project has truly created "a school and community culture where regular physical activity and healthy nutrition are seen as essential ingredients for students' health, wellness and life-long learning. Everyone is involved – students, their parents, teachers, staff, researchers and the community as a whole.

"We are always striving to improve, so we regularly review the research results to help us fine tune and develop future activity and wellness programming at all of our school communities. Black Gold Regional Schools' Health Hearts project has received both national and international recognition as a world-leading school and community initiative dedicated to the improvement of student cardiovascular health through regular physical activity and multi-stakeholder support."

The primary funders of the research were: the Canadian Diabetes Association and the Alberta Centre for Child, Family and Community Research.

"The Canadian Diabetes Association is proud to be a leading supporter of diabetes research in Canada, investing more than $7 million annually in diabetes research," said Janet Hux, chief scientific advisor for the Canadian Diabetes Association. "The association encourages Canadians to pursue healthy lifestyles in order to prevent and manage diabetes. Dr. Lewanczuk's work provides important new insights that may make enhanced activity more feasible for children and youth."

The Alberta Centre for Child, Family and Community Research added: "Having this kind of evidence should make it easier for parents, schools and daycare programs to do activities with children that will help develop lifelong healthy attitudes towards exercise and activity," stated Alberta Centre for Child, Family and Community Research President and CEO, Robyn Blackadar.

Record Shares of Young Adults Have Finished Both High School and College

Record shares of young adults are completing high school, going to college and finishing college, according to a Pew Research Center analysis of newly available census data. In 2012, for the first time ever, one-third of the nation’s 25- to 29-year-olds have completed at least a bachelor’s degree.

These across-the-board increases have occurred despite dramatic immigration-driven changes in the racial and ethnic composition of college-age young adults, a trend that had led some experts to expect a decline in educational attainment.

College completion is now at record levels among key demographic groups: men and women; blacks, whites and Hispanics; and foreign-born and native-born Americans.

Also, a record share of the nation’s young adults ages 25 to 29 (90%) has finished at least a high school education. And another record share—63%—has completed at least some college.

Some of the “credit” for recent increases appears to go to the Great Recession of 2007-2009 and the sluggish jobs recovery since. With young adults facing sharply diminished labor market opportunities, their rate of high school and college completion has been rising slowly but steadily since 2007, after having been stagnant during better economic times earlier in the decade.

Changing public attitudes about the importance of going to college to succeed in an increasingly knowledge-based labor market may also have played a role. In 1978, the public was evenly divided over whether a college education was necessary to get ahead in life. Roughly 30 years later, a lopsided majority firmly endorsed the necessity of a college degree. In a 2009 Pew Research Center survey, 73% of American adults agreed that, in order to get ahead in life these days, it is necessary to get a college education. Similarly, when the Gallup Organization asked about the importance of college in 2010, 75% of Americans said a college education is “very important.” In 1978, only 36% said the same.

The nation’s college-age population is becoming more racially and ethnically diverse – today some 44% of 18- to 25-year-olds are non-white, up from 17% in 1971. Historically, Hispanic and black youths have trailed white and Asian youths in educational attainment. That remains the case, but rates for all four groups are rising at a similar pace.

The trends on college attainment are not all positive, however. The recent increases in the U.S. come at a time when other advanced economies are registering similar or greater gains, leading experts and college presidents to question whether the U.S. has been losing its competitive position as the global leader in higher education. In 2011 the Pew Research Center conducted a survey of more than 1,000 college presidents nationwide. Among those college presidents surveyed, only 19% said the U.S. system of higher education is currently the best in the world, and just 7% said they believe it will be the best in the world 10 years from now. A plurality of presidents (51%) described the U.S. system as one of the best in the world.

That same survey also found that college presidents are concerned about the quality, preparedness and study habits of today’s college students. Overall, 52% of presidents say college students today study less than their predecessors did a decade ago; just 7% say they study more.

Why Superintendents Turn Over

Although superintendent turnover can hinder district reform and improvement, research examining superintendent exits is scarce. This study identifies factors contributing to superintendent turnover in California by matching original superintendent and school board survey data with administrative data and information hand-collected from news sources on why superintendents left and where they went. Among 215 superintendents studied beginning in 2006, 45% exited within 3 years.

Using a multinomial framework to separate retirements from other turnover, the authors find that factors such as how highly the school board rates its own functioning and the superintendent’s performance and whether the superintendent was hired internally strongly predict non-retirement exits 3 years later. Short-term district test score growth, however, is uncorrelated. Superintendents who move migrate away from rural districts toward larger, higher-paying districts in urban and suburban locations.

Assistive listening devices may improve dyslexic student reading skills

Children with dyslexia may benefit from wearing assistive listening devices in the classroom, a study suggests. Nina Kraus and colleagues studied 34 dyslexic children who ranged in age from 8 to 14 years. Nineteen of the students wore an assistive listening device, similar to a Bluetooth receiver, throughout the school day for the duration of the school year. The brain responded to sound more consistently in children wearing the devices, the authors report, a finding that could have implications for improved reading skills.

According to the authors, the devices could help improve focus and awareness in children with dyslexia while reducing background noise. The benefits could extend beyond the classroom, the authors propose, by addressing the abnormal sensory representations of speech in children with dyslexia, who have a tendency to misperceive the meanings of similar sounds such as "cat" as "bat" or "pat." Use of assistive listening devices could potentially transform how the nervous system processes sound and help normalize speech comprehension, even in children with pervasive reading impairments, according to the authors.

"Assistive listening devices drive neuroplasticity in children with dyslexia," by Jane Hornickel, Steven G. Zecker, Ann R. Bradlow, and Nina Kraus
10.1073/pnas.1206628109