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The lesson begins with graphs of the Dow Jones Industrial Average and water levels of Lake Huron where points on the graph are interpreted.

Functions, Development Math

Lesson 29: Exponential Growth and Decay

The lesson begins with a discussion about growth factors and percent increase, leading to the presentation of the compound interest formula.

Exponentials

Lesson 30: Exponential Functions

Beginning with a formal definition of an exponential function, the lesson then compares the graphs of increasing and decreasing exponential functions.

Exponentials, Development Math

Lesson 40: Properties of Lines

The lesson begins with horizontal and vertical lines, first looking at the corresponding sets of points that comprise each, then using the points to find the slope of each type of line.

Modeling: Dev Math, Linear Equations, Functions

Lesson 39: Equations with Algebraic Fractions

The lesson begins with using the lcd to clear the fractions in the equation, and then a review of proportions follows to motivate the "shortcut" of cross multiplication for equations containing on

Exponentials, Rational Functions

Lesson 38: More Operations on Fractions

The lesson begins with a definition of a "complex" fraction and then presents a procedure for simplifying them (multiplying the numerator and the denominator by the lcd of all fractions contained

Exponentials, Rational Functions

Lesson 37: Operations on Algebraic Fractions

The four arithmetic operations on fractions are given here, but in each case examples of using the operation on ordinary fractions is first reviewed, helping to ground the new material in the unde

Exponentials, Rational Functions

Lesson 36: Algebraic Fractions

The lesson begins with the definition of an algebraic fraction and then a quick review of the fundamental principle of fractions.

Exponentials, Rational Functions

Lesson 35: Polynomial Functions

Beginning with the definition of a polynomial, polynomial multiplication and degree of polynomial products are introduced.

Functions

Lesson 34: Logarithmic Scales

This lesson introduces logarithmic scales as a means for plotting data that might otherwise be difficult plot due to their widely varying values.

Logarithms