Section Topics
Fraction,
Fraction with Units, Fractions & Ratios; and Proportionality
forwards & backwards.
Section Pages
1. What is Proportionality
2. Examples of Proportionality
3. Multiple Ratios & Proportionality
4. Fractions & Proporitionality
5. More Examples
Would you like to show yourself or others how to be
algebra
power users?
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Numerator is Proportional to Denominator in Equivalent Fractions
Equivalent Fractions:
A fraction M/N equals 3/4, that is
when and only when
when and only when
4M = 3N or the numerator M = (¾ ) N is proportional to the
numerator N.
In general a pair of fractions
are equal when and only when the numerator M of the first
is proportional to the denominator M of the first with proportionality
constant k = the second fraction A/B
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Math How-TOs
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Geometry 6. Calculus
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Volumes (orders)
1, Elements of
Reason. 1996
1A. Pattern
Based Reason 1995
1B. Math
Curriculum Notes 1996
2. Three
Skills for Algebra 1995
3 .Why.Slopes.&.More.Math.1995
Skill
& Concept
Review or Development
1. Decimal
Arith - Video Based ]
2 Fractions
3. Fractions
with Units
3. Solving
Linear Equations -
making alg easier
4. Formulas
forwards & Backwards - unifying theme for Algebra
5. Proportionality,
Back- & For-wards - theme at work.
6. Logic
- Math Free, good for precision in work & studies
7. Euclidean-Geometry
(leanly)
8. Slopes
and Lines
9. Why
Study Slopes - a context
10. Quadratics
11 Polynomials
12 Factored
Polys - a context
13 Functions
- For-& Back -wards
14 Number
Theory, Richly
15. Exponents,
Radicals & logs.
16 Calculus
- Examples & Advice
17. Real
Analysis
18
Electric
Circuits Etc (So So)
19 Maps,
Similarity & Trig, (alt view)
20 Complex
numbers
21
Logic with Symbols+truth tables
22 Consistent
Story Telling
23. Even
More Logic
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