The following problems rely on the data contained in this spreadsheet. It has four tabs, and each problem will refer you to the appropriate tab. Note that this is real world data, not data generated for an “easy” math problem. Your model is NOT likely to hit all the data points perfectly. Sunrise 1 -…… Continue reading Practice: Modeling Events Using Periodic Functions

# Author: Whit Ford

Math tutor since 1992. Former math teacher, product manager, software developer, research analyst, etc.

## Function Transformations: Dilation

Function dilations, introduced using both a visual and an algebraic approach.

## Function Transformations: Translation

Function translations, introduced using both a visual and an algebraic approach.

## Practice Problems: Ugly Linear Equations

More time-consuming multiple step single variable linear equation practice problems, all with a common solution

## Using Corresponding Points to Determine Dilation Factors and Translation Amounts

A worked example of how to determine transformation functions and the transformed equation, given the equation of the first graph and two sets of corresponding points from the graphs.

## Pi Notation (Product Notation)

Explanation of how Pi notation describes the product of a series of factors.

## Sigma Notation (Summation Notation)

Explanation of Sigma notation, also known as Summation Notation. Explanations of how to describe a sum of terms using it, with examples.

## Practice Problems: Three Step Linear Equations

Three step single variable linear equation practice problems, all with a common solution

## Practice Problems: Two Step Linear Equations

Two step single variable linear equation practice problems, all with a common solution

## Practice Problems: One Step Linear Equations

One step single variable linear equation practice problems, all with a common solution

## Math: Pen vs Pencil

Should students use pencil or pen when doing math work?

## 11 Ways To Do Better In Math

Eleven things a student can do to improve their mathematics experience.

## Interactive Graphs for Linear, Quadratic, Rational, and Trig Functions Moved to GeoGebraTube

A set of links to Algebra and Trigonometry GeoGebra applets hosted on GeoGebraTube.

## Unit Circle Symmetry: a GeoGebraBook Exploration

Nine GeoGebra applets that help students explore how symmetries about the x-axis, y-axis, and origin on the unit circle are useful in trigonometry. Examples using the sine and cosine functions are included.

## Absolute Value: Notation, Expressions, Equations

How to interpret absolute value notation and solve equations that include absolute values. Examples are linear equations, but the same approach works with non-linear equations.