Provider: Japan Science and Technology Agency Database: J-STAGE Content:text/plain; charset="utf-8" TY - JOUR TI - A Study of Achievement Motivation in Mathematics Learning (Ⅳ) TI - Interrelationships between Self Confidence toward Mathematics, Difficulty of Mathematical Task and Mathematical Task - Solving Performance - AU - ITO,TOSHIIHIKO JO - Japan Journal of Mathematics Education and Related Fields VL - 27 IS - 1-2 SP - 17 EP - 40 PY - 1986 DO - 10.34323/mesj.27.1-2_17 ER -