1984 Volume 25 Issue 1 Pages 43-50
The author has detailed the taxonomy of cognitive skills developed by CSMS PROJECT which was used to evaluate the science curriculum. Basing on it, he has analysed the reason why the Japanese lower secondary school students had failed to master some scientific concepts. Result of this analysis, it has been clarified that they had not understand the logical relationships that had made up the concepts, therefore, they had failed. To solve this and to help them better understand the concepts, it is necessary for teachers to identify the way how they learn the concepts using the logical relationships in each developmental stage. In applying this strategy to design the science curriculum, it will be possible to enhance their achievement on these concepts.