Skateboard practice
Subtitle: addition, subtraction
By: authors, Elsie Robertson, Mary Laycock, Peggy McLean ; artist, Martha Kyzer.
Contributors: Laycock, Mary.; McLean, Peggy.
Publisher: Activity Resources
Published: 1978
Place of publication: Hayward, Calif
Language: eng
Number of pages: 62
Subjects: Mathematics -- Problems, exercises, etc.; Mathematics -- Study and teaching (Primary)
Notes: Cover title.