How People Learn: Brain, Mind, Experience, and School: Expanded Edition

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How People Learn: Brain, Mind, Experience, and School: Expanded Edition (2000)
Board on Behavioral, Cognitive, and Sensory Sciences (BBCSS)

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. "3 Learning and Transfer." How People Learn: Brain, Mind, Experience, and School: Expanded Edition. Washington, DC: The National Academies Press, 2000.

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How People Learn: Brain, Mind, Experience, and School

BOX 3.11 Three Solutions to the Best-Buy Problem

Which is the best buy for barbecue sauce?		Percentage Using Strategy
Difference strategy		Simulation study	Supermarket study
	18−14=4 ounces 79−81=−2 cents A gives 4 more bunces and costs 2 cents less than B	9	22
Which is the best buy for sunflower seeds?
Unit-price strategy 30/3=10 cents per ounce 44/4=11 cents per ounce A costs less per ounce than B		39	5
Which is the best buy for peanuts?
Ratio strategy	2×45=90 cents 2×4=8 ounces A costs twice as much as B and contains more than twice as much	47	35
SOURCE: Adapted from Lave (1988).