Stunningly, the typical answer-based tutoring systems average an effect size of around 0.35 standard deviations, and all three of the step-based, substep-based, and human tutoring cluster around an effect size of 0.75 standard deviations.

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While there is no one-size-fits-all list of the cheapest individual plans, we can offer a step-by-step process for finding the least painful deal for you.

FORBES: Magazine Article

The restaurant also has a gigantic Barbie box allowing customers to step in and feel like a packaged up, life-size Barbie.

CNN: January 31, 2013 -- Updated 1138 GMT (1938 HKT)

General Motors is doing its part to keep its factories humming and stay one step ahead of the competition in the hotly contested full-size pickup segment by offering hefty cash incentives on its broad line of Silverado and Sierra models.

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While we can't spit out a one-size-fits-all list of the cheapest health-insurance plans, we can offer a step-by-step process for finding the best deal in your market.

FORBES: How To Find The Best Deal On Health Insurance

On the plus side, the ability to directly detect light from a planet closer to the size of Earth than a Jupiter-sized gas giant is a positive step forward in our ability to learn more about planets that might be habitable.

FORBES: NASA Detects The Light Of A 'Super-Earth'