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Interactive tabletops are an exiting new platform for supporting children's collaboration. With design guidelines and standardized interaction principles still immature, there is a considerable need for iterative prototyping to define the task and interface. Lo-fi prototypes---using cardboard, paper, etc.---are easy to develop, flexible to adjust during(More)
This paper assesses some of the environmental factors relating to BMI in a very large and comprehensive household survey conducted in 1974 in Brazil and involving about 51,000 households in all parts of the country. In this study not only were the children and adults in all households weighed and measured but the household diet, socio-economic status and a(More)
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