Challenge, a program for the mathematically talented, grades 3-6
By: Vincent Haag ... [et al.].
Contributors: Haag, Vincent H.
Edition: Teacher's ed.
Publisher: Addison-Wesley Pub. Co.
Published: 1900
Place of publication: Menlo Park, Calif
Language: eng
Subjects: Mathematics -- Study and teaching (Elementary); Gifted children -- Education -- Mathematics.