Equations from Data

When businesses, governments and other policy makers prepare to make decisions, they often look at data to find trends. In this activity, we will use data and a graphing calculator, Desmos, or Geogebra to find an equation that best fits the data points. Statista has Global Apple iPod sales (in million units). Plot the data [...]

By | 2017-11-13T22:01:55+00:00 September 25th, 2016|Graphing Calculator, PreCalculus, Statistics|0 Comments

Functions and their Graphs

Reviewing Parent Functions In Pre-Calculus class we dove right in and reviewed five of our parent functions. Screen shots of Reviewing Parent Functions Geogebra Activity are shown below. I will likely rework it next year to include a slider for a variable "b" that reflects across the y-axis and horizontally stretches/shrinks the graph. I made [...]

By | 2017-11-13T22:01:56+00:00 September 5th, 2016|PreCalculus|0 Comments

Rectangular Coordinates

Coordinate Plane The coordinate plane is used to represent ordered pairs of real numbers by points in a plane and determine relationships between those points and the segments, lines or curves that connect them.   The axes form four quadrants. The x values are positive from the origin to the right and are negative from [...]

By | 2017-11-13T22:02:01+00:00 August 16th, 2015|PreCalculus|0 Comments

Angular Velocity to Linear Velocity

It is one thing to read about a tire rotating at a specified number of revolutions per second. It is another to be able to visualize it. When you add lights to bike tires and film at dusk you slow things down enough to make sense of the question. How fast is the bicycle going? [...]

By | 2017-11-13T22:02:02+00:00 March 15th, 2015|PreCalculus|1 Comment