Title Card: Since addition does not have an inverse, what are people talking about when they say that subtracting is the inverse of adding?
Title Card: From "Functions: Foreshadowing the Concept"
Title Card: The teacher (Max Beberman) summarizes his talk to the Mathematics Institute Class.
Title Card: From 28th Lesson of a 166 Lesson Course [Max Beberman teaching math concepts to schoolchildren]
Title Card: From Lesson 49
Title Card: [Image of a Subtracting Machine containing an Oppositing Machine and Adding Machine.]
Credits [Title cards]
Instructor: Max Beberman
Produced by the University of Illinois Committee on School Mathematics
with grants from the National Science Foundation and the US Office of Education
Project Director: Max Beberman; Content Director: Gertrude Hendrix; Asst. Content Director: Jesse Orvedahl; Film Director: Byrl Sims
New Series Staff: Martin Fass, Wesley Faulkner, James W. Hall, Robert LA Gow; First Series Staff: Stanley Follis, John Werner; Classroom
furniture courtesy of Brunswick
Teaching High School Mathematics; First Course; Subtracting Real Numbers
Identifier:
e_mb_0013
Description:
Max Beberman shows mathematics teachers how to help students produce a formal definition of subtraction. Rather than allow them to
watch someone solve a division problem and imitate the procedures, he teaches students to use real discovery. He then develops the concept of adding negative numbers. Black and white
picture with sound. Eastman Kodak edge code reads "square triangle," which correlates to 1965.
Country:
United States
State:
Illinois
City:
Champaign
Date:
circa 1965-1966
Creator
University of Illinois Committee on School Mathematics (producer)
