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Jobs in science, technology, engineering and mathematics are growing at four times the rate of other career sectors, says the partnership, and Iowa's economy increasingly relies on high-tech jobs.

Research confirmed in the 1990s that students learn more by grappling with open-ended problems, like creating a computer game or designing an alternative energy system, than listening to lectures. While the National Science Foundation went on to finance pilot courses that employed interactive projects, when the money dried up, so did most of the courses.

he also says it’s inevitable that students will be lost. Some new students do not have a good feel for how deeply technical engineering is. Other bright students may have breezed through high school without developing disciplined habits. By contrast, students in China and India focus relentlessly on math and science from an early age.

The Massachusetts Institute of Technology has long given freshmen only “pass” or “no record” grades in the first half of the year while they get used to the workload.