In this paper we describe the development of the creativity power and the creativity attitude in mathematics learning for junior high school student's grade 1 to grade 3. For the creativity power measurement, we used a creativity test of "The Number and Formula" and "The Figure and Congruence" used the test score. For creativity attitude measurement, we used a Creativity Attitude Scale (CAS) that was developed by Saito N. We examined the development of the creativity test score and the creativity attitude scale score, and the causal relation between the creativity test score and the creativity attitude scale score for "The Number and Formula" and "The Figure and Congruence". The results are as follows: - The students who get higher score of the fluency get higher score of the diffusion for junior high school student's grade 1 to grade 3. - The students who get higher score of the flexibility get higher score of the originality for junior high school student's grade 1 to grade 3. - The creativity attitude scale score hardly develops for junior high school student's grade 1 to grade 3.