NUMBERS LESS THAN ZERO (Filmstrip) No. 1251. Popular Science Audio-Visuals. 42 fr., color, 35 mm. (A Mathematics release) With Filmstrip guide, 5 p. © Popular Science Audio-Visuals, Inc.; 2Feb70; A196082.
NUMBERS 0-4. See
MATHEMATICS, LEVEL 1.
NUMBERS 5-9. See
MATHEMATICS, LEVEL 1.
NUMERATION. See
MATHEMATICS, LEVEL 3.
NUMERATION SYSTEMS (Filmstrip) No. 736. Educational Projections Corp. 45 fr., color, 35 mm. (Mathematics, level 4) By Donovan R. Lichtenberg & Charles W. Engel. © Educational Projections Corp.; 1Nov68; JP12659.
NUMERATION SYSTEMS (Filmstrip) No. 760. Educational Projections Corp. 43 fr., color, 35 mm. (Mathematics, level 6) By Donovan H. Lichtenberg & Charles W. Engel. © Educational Projections Corp.; 11Nov69; JP12671.
NURSE'S AIDE. See