National Council of Teachers of Mathematics. (1997). Fostering algebraic and geometric thinking: Selections from the NCTM standards. National Council of Teachers of Mathematics.
Cita Chicago Style (17a ed.)National Council of Teachers of Mathematics. Fostering Algebraic and Geometric Thinking: Selections from the NCTM Standards. Reston, VA: National Council of Teachers of Mathematics, 1997.
Cita MLA (9a ed.)National Council of Teachers of Mathematics. Fostering Algebraic and Geometric Thinking: Selections from the NCTM Standards. National Council of Teachers of Mathematics, 1997.
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