Today, we have confronted with the difficulties to utilize the educational evaluation of the target conformity type in schools and the complicated work to develop and revise the criteria and indicators for use in the assessment. In this paper, we discuss the problems of the assessment from the historical point of view. According to this discussion, we try to implement Backward Design for the improvement of the problems of the educational assessment under the present conditions. This approach has three stages: Identify desired results, Determine acceptable evidence, Plan learning experiences and instruction. We show the efficiency of this approach based on Performance Task and Rubric to develop children's insights toward number, quantity and geometric figure in mathematical phenomena through design experiment.
