D.C. Mun. Regs. tit. 5-E, § 1608
1608.1 For certification in elementary mathematics resource, the following shall be required:
(a) A regular elementary education teaching certificate;
(b) Twenty-one (21) semester hours in mathematics content, above that which is required of an elementary classroom teacher license, to include at least three (3) semester hours in each of the following areas:
(1) Algebra;
(2) Geometry;
(3) Probability and Statistics;
(4) Number Theory;
(5) History of Mathematics;
(6) Problem Solving Applications; and
(7) Computer Science; and
(c) Two (2) years satisfactory teaching experience in the elementary school.
SOURCE: Final Rulemaking published at 28 DCR 3201 (July 17, 1981); as amended by Final Rulemaking published at 33 DCR 6542 (October 24, 1986); and by Final Rulemaking published at 40 DCR 6893, 6900-01 (October 1, 1993).