Cognitive Load Influenced the Pupill's Strategies Selection OfDistributing Working Memory Resources

175 graders from 3 to 6 were selected from one primary school to explored that if and how the cognitive load influenced the strategies selection of pupils' distributing working memory resources in solving the running- arithmetic problems. The results showed: Intrinsic cognitive load did influence the strategies selection of pupils' distributing working memory resources. In the strategies selection, cognitive load effected the cognitive performance, but for the lower graders the effect is not remarkable. For the sixth graders, the effect is remarkable. In the accuracy of the strategies, the effect of cognitive load reduced by the grades. And in the efficiency of the strategies, cognitive load did influence the strategies.