The National Council of Teachers of Mathematics (NCTM) integrates algebra into its Principles and Standards starting from Kindergarten.
NCTM's original intention was to operate streetcars owned by DC Transit president O. Roy Chalk, but it was not until 1970 that Chalk donated several historic Washington streetcars.
The Harmful Effects of Algorithms in Grades 1–4 is a research paper published in the NCTM 1998 Yearbook and written by Constance Kamii and Ann Dominick.
In the 1980s Romberg was chair of the National Council of Teachers of Mathematics (NCTM) commissions that produced Curriculum and Evaluation Standards NCTM standards for School Mathematics, and the Assessment Standards for School Mathematics.