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Abstract This article aims to interpret the most well-known theories of economic development based on the assumption that these theories are contemporary mythological tales and, consequently, the Brazilian 2000’s neo-developmentalism agenda as an inexact unique blend of them all. The study uses Roland Barthes’ semiotic interpretation on the social structure and roles of myths to argue that theories of development are rather a compound of ideologies than a scientific field of inquiry. In addition, the article draws a parallel between Joseph Campbell’s hero’s journey and the five widely known narratives of development: Protectionist, Keynesian, Institutional, Entrepreneurial and Neoclassical.

Objective.To evaluate the effects of educational software to improve first grade school students' knowledge about prevention of overweight and obesity. Methods. This non-controlled trial with a before-and-after evaluation was carried out in an school located in the municipality of Divinópolis (Brazil) among 71 students aged 6 to 10 years. The educational software about prevention of overweight and obesity was designed and then validated. The educational intervention comprised the use of the software. Before and after of the intervention we applied a questionnaire based on the Ten Steps to Healthy Eating for Children, proposed by the Brazilian Ministry of Health. Results. Comparing the times before and after application of the educational software, we observed statistically significant differences in proportion of questions answered correctly by first grade school students, mainly concerning daily eating of healthy and unhealthy food, adequate preparation of food and importance of exercise. Conclusion. This study highlights the importance of educational actions using software to build knowledge of first grade school students about prevention of overweight and obesity.