Activities

Here you can find some activities I've developed using TI-Nspire™.

If you don't have TI-Nspire you can download the trial version of the computer software from Texas Instruments' website and install it on your computer. It's valid for 30 days and allows you to explore its potential freely, namely testing the activities listed below.

**Remark:** All files in this section were built on version 1.7 of TI-Nspire software.
In order to download and install them you first need to update your TI-Nspire. You can
download the latest version from
TI's website.

This activity simulates the radioactive decay of a set of atoms. A group of 500 atoms will decay, at a fixed rate, and a plot will be displayed in realtime showing the atoms that have decayed and those that haven't.

This activity has an animation showing the basic principles behind the GPS system. As the animation proceeds the distances to points S1, S2 and S3 are shown and finally the coordinates of the point we want to find.

An activity about fractions: fractions as parts of the unit, simplifying fractions and comparing fractions. The process of simplifying a fraction is animated and when comparing fractions you may choose to display or hide the solution.

This activity explores the concept of prime numbers and includes the construction of a Sieve of Eratosthenes to determine all primes up to 100.

This activity explores the way the Geometry application can be used to model Physics problems. By using carefully built vectors and the possibilities offered by TI-Nspire Teacher Edition software this activity illustrates the concept of net force, in an abstract situation and on the inclined plane, including a multiple choice questionaire that students can fill in and then turn in for grading.

The Portuguese version of this file is preloaded on the Exemplos folder or TI-Nspire's operating system version 1.7 (when you change TI-Nspire's language to Portuguese).

An activity, ready to use in a classroom, where students are guided through a classical proof of the Pythagorean theorem.

The Portuguese version of this file is preloaded on the Exemplos folder or TI-Nspire's operating system version 1.7 (when you change TI-Nspire's language to Portuguese).

In this activity students should arrive at the formula for the area of a circle by studying the area of regular polygons as the number of sides increases.

This document contains the geometrical construction of the trigonometric circle and the graph of the trigonometric functions, allowing one to study the functions sine, cosine, tangent and cotangent starting with their geometrical definition.

It can be included in other documents to create custom activities to use in the classroom.

The Portuguese version of this file is preloaded on the Exemplos folder or TI-Nspire's operating system version 1.7 (when you change TI-Nspire's language to Portuguese).

The classical problem of maximizing the area of a rectangle of fixed perimeter now as a classroom activity using TI-Nspire.

Brownian motion refers to the random movement of a particle. For example, a dust particle in the surface of a lake, continuously pushed in random directions. Brownian motion is one of the simples examples of a stochastic process.

An activity that uses a Monte Carlo simulator to determine a numerical approximation to the value of Pi.