## Riemann Sum Program for the TI-83+ and TI-84+

RIEMANN, a program for the TI-83+ and TI-84+, approximates the area under a curve (integral) by calculating a Riemann sum, a sum of areas of simple geometric figures intersecting the curve. The program solves Riemann sums using one of four …
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Filed under Calculus, Difficulty: Easy, TI-83 Plus, TI-84 Plus | 6 Comments

## Three Applications to Turn Your TI-83+ or TI-84+ into a TI-89

The TI-89 series of calculators is packed with features that, unfortunately, are lacking in the TI-83+ and TI-84+. This tutorial will show you how to install and use three applications to add 3D graphing, symbolic differentiation, simplifying equations, and pretty-print …
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Filed under Algebra, Calculus, Difficulty: Medium, TI-83 Plus, TI-84 Plus | 18 Comments

## Performing a Linear Regression on the TI-83+ or TI-84+

Linear relationships are examined in practically every discipline of the natural and social sciences. Using the statistics functions of the TI-83+/TI-84+ it is relatively easy to investigate this relationship by performing a linear regression on two variables, such as the …
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Filed under Difficulty: Medium, Statistics, TI-83 Plus, TI-84 Plus | 29 Comments

## Creating a Simple Quadratic Formula Program on Your TI-83 Plus or TI-84 Plus

One of the most useful features of the TI-83 Plus/TI-84 Plus series of calculators is their integrated programming language, TI-BASIC. Unfortunately, not much documentation exists online on how to create programs using this feature. This tutorial provides an introduction on …
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## Transferring Spreadsheets Between Microsoft Excel and your TI-83+, TI-84+, TI-89, TI-92+, or Voyage 200

Using these steps are useful when you want to put large amounts of data on your TI-83 Plus, TI-84 Plus, TI-89, TI-92+, or Voyage 200 calculator for statistical analysis. Afterwards you can also transfer data back from your calculator to Excel. …
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