HENRY, Valerie J. & BROWN, Richard S. (2008): First-Grade Basic Facts: An Investigation into Teaching and Learning of an Accelerated, High-Demanding Memorization Standard.- In: Journal for Research in Mathematics Education, Vol. 39, No. 2, S. 153-183. | HENRY, Valerie J. & BROWN, Richard S. (2008): First-Grade Basic Facts: An Investigation into Teaching and Learning of an Accelerated, High-Demanding Memorization Standard.- In: Journal for Research in Mathematics Education, Vol. 39, No. 2, S. 153-183. |