Slide rule: percentage, proportion, squares and square roots

Using a rule with only “C” and “D” scales, multiplication and division operations are revised. Problems in proportion are solved, using both left and right index. Problems in percentage solved using the proportion method. Use of the rule with “A”, “B”, “C” and “D” scales. Procedures for determining squares and square roots are demonstrated.

Credits

director

F.E. Brooker

production company

Loucks and Norling Studios

Duration

00:20:15:00

Production places

United States

Production dates

1944

Collection metadata

ACMI Identifier

009907

Language

English

Subject categories

Education, Instruction, Teaching & Schools → Mathematics - Study and teaching

Educational & Instructional

Educational & Instructional → Educational films

Educational & Instructional → Instructional

Mathematics, Science & Technology → Arithmetic

Mathematics, Science & Technology → Mathematics

Mathematics, Science & Technology → Mathematics - Study and teaching

Short films

Short films → Short films - United States

Sound/audio

Sound

Colour

Black and White

Holdings

16mm film; Access Print (Section 1)

Please note: this archive is an ongoing body of work. Sometimes the credit information (director, year etc) isn’t available so these fields may be left blank; we are progressively filling these in with further research.

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If you would like to cite this item, please use the following template: {{cite web |url=https://acmi.net.au/works/72901--slide-rule-percentage-proportion-squares-and-square-roots/ |title=Slide rule: percentage, proportion, squares and square roots |author=Australian Centre for the Moving Image |access-date=29 September 2021 |publisher=Australian Centre for the Moving Image}}

United States, 1944

Please note