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Moses, Barbara National Council of Teachers of Mathematics 1997 p.p264
Algebraic thinking: A professional development theme
Ruopp, Faye Nisonoff National Council of Teachers of Mathematics 1997 p.p326
Becoming very-able with variables
Speer, William R National Council of Teachers of Mathematics 1997 p.p305
Computers support algebraic thinking
Clements, Douglas H National Council of Teachers of Mathematics 1997 p.p320
Usiskin, Zalman National Council of Teachers of Mathematics 1997 p.p346
Ferrini-Mundy, Jean National Council of Teachers of Mathematics 1997 p.p282
A foundation for algebraic reasoning in the early grades
Yackel, Erna National Council of Teachers of Mathematics 1997 p.p276
Functions from kindergarten through sixth grade
Willoughby, Stephen S National Council of Teachers of Mathematics 1997 p.p314
Literataure and algebraic reasoning
Lubinski, Cheryl A National Council of Teachers of Mathematics 1997 p.p290