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

Language

English

Duration

00:20:15:00

Colour

Black and White

Collection metadata

ACMI Identifier

28617

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

Holdings

16mm film; Access Print (Section 1)

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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=14 June 2021 |publisher=Australian Centre for the Moving Image}}