The role of contexts and models in the development of mathematical strategies and procedurs
371 Bei t
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An introduction to mathematical reasoning , numbers, sers and function
511 Ecc a
Publisher: Cambride, Collation: xii+350, Language:
Instructional development for training teachers of exceptional children , a source book
510 Thi i
Publisher: , Collation: , Language:
Reinvention of early algebra, developmental research on the transition from arithmetic to algebra
512 Ame r
Publisher: CDB, Collation: x+340, Language: