Showing posts with label parabolas. Show all posts
Showing posts with label parabolas. Show all posts

Tuesday, February 3, 2009

Parabolas Ep. 4 - Looking at Parabolas When a is a Fraction - 10:07

Tuesday, January 27, 2009

Parabolas Episode 9 - The Vertex Form of Quadratic Functions (h,k) - 21:12

Parabolas Ep. 7 - Introduction of the (0,k) Vertex Form - 22:38



KEY CONCEPTS:

In this video we see how Quadratic Function written in the form of:

y=ax^2+k - will lead us to a vertex of (0,k)

Parabolas Ep. 6 - Using the 1,3,5-Pattern for Graphing - 11:30



KEY CONCEPTS: In this video we look at the 1,3,5-Pattern for graphing quadratic function (parabolas). These videos are intended for the viewer to steer away from using Table of Values and to use the Vertex form along with the 1,3,5-Pattern.

How did we come up with the 1,3,5-Pattern? Look closely at the differences in the y-axis.

Parabolas Ep. 2 - The Quadratic Function - 4:16



KEY CONCEPTS:

The following video looks at the various ways that quadratic functions can be written. Be on the lookout for such equations, because if you ever come across them you'll know they form a parabola.

Monday, January 26, 2009

Parabolas Episode 8 - Introduction of the (h,0) Vertex Form - 21:02



KEY CONCEPTS: This video looks at Quadratic Function written in the form:

y=a(x-h)^2
- where the vertex is (h,0)

**NOTE: When writing the x-value of the vertex, take the opposite sign of what's within the brackets. (i.e. y=2(x+3)^2 would give us a vertex of (-3,0)

Parabolas Ep. 5 - Looking at Parabolas that Reflect the x-Axis - 9:32

Parabolas Ep. 3 - Looking at the Differences in Simple Quadratic Expressions - 39:34



KEY CONCEPTS:

The following podcasts investigates table of values for quadratic functions. Understanding that difference we can graph other quadratic functions without the need to complete a table of values.

Parabolas Episode 1 - Who Cares About Parabolas - 2:34



This short video just looks at how parabolas are everywhere.