00437nam a2200133Ia 4500008004100000100002500041245010100066245002500167260004000192260000900232300002600241650001400267650002200281170224s9999    xx            000 0 und d  aMelissa C. Gilbert    aRelating aspects of motivation to facets of mathematical competence varying in cognitive demand   cMelissa C. Gilbert    bThe Journal of Educational Research  c2016  a109:6, Pages: 647-657  xEducation  xSpecial Education