Algebra Mini-Series #2: Moving Quantities Left and Right in Equations

This is part two of our weeklong series on improving your algebra skills. Our goal for this series is to provide a useful resource for both students and teachers, so that this article can be used in the classroom, for …

Filed under Algebra, Difficulty: Easy | 1 Comment

Algebra Mini-Series #1: Replacing Large Expressions with a Single Variable

This is part one of our weeklong series on improving your algebra skills. Our goal for this series is to provide a useful resource for both students and teachers, so that this article can be used in the classroom, for …

Filed under Algebra, Difficulty: Easy | 1 Comment

SAT Prep #4: Using Your Calculator’s Fraction Features

Both the TI-83/TI-84 Plus and the TI-89 have built-in features for dealing with fractions, which can help to solve many of the fractions problems on the SAT. For example, on the TI-84, you can convert a decimal into a fraction …

Matrices Made Easy: TI-83 and TI-84 Plus Edition

Performing any type of mathematical operation such as addition or multiplication that involves matrices can be a daunting task, especially if you have to do all the steps without the aid of a calculator. Fortunately, your graphing calculator can solve …

Changing the Number of Decimals Displayed on the TI BA II Plus and HP 12c

Depending on the problem you are solving or your preferences, you may want to change the number of decimal places that are displayed on your financial calculator. Fortunately, this is quite easy to do. Keep reading to learn how to …

Filed under Difficulty: Easy, HP 12c, TI BA II Plus | 3 Comments

Settings on the TI-83 Plus and TI-84 Plus: The MODE Menu

The TI-83 Plus and TI-84 Plus offer a variety of different settings for customizing calculations and the way graphs are displayed. While some of these options are more aesthetic, like setting the graph to be displayed in a split screen …

Filed under Difficulty: Easy, TI-83 Plus, TI-84 Plus | 6 Comments

SAT Test Prep #3: Calculating Sale Prices, Percentages and Discounts

One of the ways you can improve your SAT is score is identifying problems that may seem simple but are actually written to trick you. If you are rushing through a test, you may miss out on easy points. Consider …

Filed under Algebra, Difficulty: Easy, SAT, Test Prep, TI-83 Plus, TI-84 Plus, TI-89 | 1 Comment

Business and Finance Math #5: Calculating the Effective Annual Rate (EAR) on the TI-83 & TI-84 Plus

While they are intended primarily for math and statistics work, the TI 83 Plus and TI 84 Plus also have a slew of built in financial functions similar to those available on advanced financial calculators. This tutorial describes how to …

Business and Finance Math #4: Continuous Compounding on the TI BA II Plus & HP 12c

Sometimes when reviewing time value of money (TVM) problems, you may encounter a situation that involves continuous compounding. As we have seen in our previous posts on interest rates and calculating effective rates, the more times compounding occurs, the higher …