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“ ... Students who use computers at school several times a week perform sizably and statistically worse in both math and reading.”
“ ... there is also a negative relationship between home computer availability and student achievement, ...”
“ Having a computer at home and using it at school will almost certainly raise some computer skills. What our results suggest is only that this may come at the expense of other skills . However, Borghans and ter Weel (2004) show that these other (math and writing) skills are the ones that yield significant labor-market returns, not the computer skills.”
Clotfelter, Ladd and Vigdor (Duke Univ.), 2008 ~1,000,000 5 th and 8 th grade students, 2000-2005
“ Our preferred specifications indicate that 5th through 8th grade students generally perform best on math and reading tests when they do not have access to a computer at home . Conditional on owning a computer, the ‘optimal’ rate of use is infrequent, twice a month or less.”
“ For school administrators interested in maximizing achievement test scores, or reducing racial and socioeconomic disparities in test scores, all evidence suggests that a program of broadening home computer access would be counterproductive .”
3 local studies (analyzing SAEB – 287,719 students)
Naércio Menezes Fo. (USP/Ibmec), 2008
“ Comparing students of equal social-economical status and same environment, the average in mathematics in public or private schools where students have access to computers does not differ significantly from children in schools without computers or Internet.”
Maresa Sprietsma (European Center for Economical Research, Mannheim), 2005
“ ... the presence of computers in Brazilian schools negatively affects the students’ performance in Portuguese and, mainly, in Mathematics. ”
“ The first result is that students who always use a computer, independently of the social-economic class, obtained worse performance than those who never use a computer. … For both subjects [Math and Portuguese] using a computer is always associated to a worse result in the tests, comparing to the group that never uses a computer. ”
From the web site “One laptop per child”, http://www.laptop.org (July 24, 2009):
“ A computer uniquely fosters learning learning by allowing children to ‘ think about thinking ’, in ways that are otherwise impossible. Using the XO as both their window on the world, as well as a highly programmable tool for exploring it, children in emerging nations will be opened to both illimitable knowledge and to their own creative and problem-solving potential. ”
Absolutely wrong! “ Window ” should be to the real world and imagination, and not to a virtual world!
Children should not think in abstract and formal ways (‘ programmable tool ”) – they would not be children anymore!
Children should not “ think about thinking ” – their thinking should be intuitive and not self-conscious
Children should not learn how to consciously learn , which would be correct for adults
Children should explore the real world and not virtual ones