16mm Filmography
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Subtraction of Rational Numbers

Illustrates various methods for introducing subtraction of rational numbers. Demonstrates such approaches as renaming numbers and using the number line and the slide rule. Stresses using addition to check answers., Points out that the basic missing-addend meaning of subtraction applies to all rational numbers instead of just whole numbers. Demonstrates several approaches to subtraction, including renaming numbers and using a slide rule. Stresses checking answers by adding.

Copyright

Registered 5Aug70 · MP21065 (Jan-Jun 1971) Copyright holder: General Learning Corp Production company: Davidson Films

Complete catalog record
Illustrates various methods for introducing subtraction of rational numbers. Demonstrates such approaches as renaming numbers and using the number line and the slide rule. Stresses using addition to check answers., , Points out that the basic missing-addend meaning of subtraction applies to all rational numbers instead of just whole numbers. Demonstrates several approaches to subtraction, including renaming numbers and using a slide rule. Stresses checking answers by adding. NOTE: Two (or more) records have been merged together to create this data.

More in Elementary Mathematics for Teachers and Students Series

  1. Adding With Fractions - Machine
  2. Decimal Equivalents For Fractions - Names
  3. Decimal Names For Rational Numbers - Bricks
  4. Decimals - Addition And Subtraction
  5. Dividing With Decimals - Four Flusher
  6. Dividing With Fractions - Missing Factor Method - Lola And Arthur
  7. Equivalence Classes In Addition - Fraction Singers
  8. Equivalent Fractions - Watermelons
  9. Exploitation Of Errors - Edgar's Guess
  10. Extending Multiplication To Rational Numbers - Clouds
  11. Graphing Inequalities - Marvelous Marshes
  12. Multiplying with Decimals - Tiles
  13. Negative Rationals
  14. Operations Extended to Negative Rationals
  15. Product Of Two Negative Numbers - Fish
  16. Ratio - Deer Park
  17. Reciprocals - Multiplicative Inverses - Sunglasses
  18. Rounding - Foxes
  19. Shortcuts In Multiplying With Fractions - Distributivity ( Egyptians)
  20. Shortcuts In Multiplying With Fractions - Mac's Factory
  21. Subtracting With Fractions - Gems
  22. Subtracting With Mixed Numerals - Stones
  23. The Remainder In Division - Termites
  24. Adding With Mixed Numerals - Coal Miners 1970
  25. Addition of rational numbers 1970

Related films

Sources

  1. 16mm Filmography (legacy record) — title, year, creator, length, format, color, sound, description, catalog record
  2. U.S. Copyright Office, Catalog of Copyright Entries (renewals, 1970–1978) — copyright

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