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Recent attention has been placed on whether computer assisted learning (CAL) can effectively improve learning outcomes. However, the empirical evidence of its impact is mixed. Previous studies suggest that the lack of an impact in developed countries may be attributable to substitution of effort/time away from productive, in-school activities. However, there is little empirical evidence on how effective an in-school programme may be in developing countries. To explore the impact of an in-school CAL programme, we conducted a clustered randomised experiment involving over 4000 third and fifth grade students in 72 rural schools in China. Our results indicate that the in-school CAL programme has significantly improved the overall math scores by 0.16 standard deviations. Both the third graders and the fifth graders benefited from the programme.

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In face of the economic "new normal", the western regions must adhere to the concept of "green development" and give great impetus to regional ecotourism, which is an important way for boosting healthy and rapid growth of regional economy. In this paper, the cluster analysis method is used and 16 indicators in four categories established to classify and analyze the current development conditions of tourism economy in twelve provinces (cities) in China's western regions. These twelve provinces (cities) are classified into the regions where the development of tourism economy is mature, stable and at the exploratory stage, respectively. Major factors that affect the development of regional tourism economy are presented and analyzed, and suggestions are offered for the development of tourism economy in these three classes of regions.