## Angle Relationships and Parallel Lines

A TI-Nspire activity for investigating opposite angles and angles formed with two lines are cut by a transversal.
http://www.tigeometry.com/activities/cabrijr/239/

## Points and Lines and Slopes - Oh My!

Students use a TI-Nspire calculator to investigate coordinates of points and the gradients (slope) and equations of linear functions.
http://www.tialgebra.com/activities/algebra_i/335/

## TI-Nspire tutorials

Getting Started with TI-Nspire
A T-cubed on-line course on the TI-Nspire.
http://education.ti.com/educationportal/sites/US/sectionHome/pd_onlineti...

Atomic Learning
Atomic Learning is an award-winning provider of web-based software training and tutorials.
http://movies.atomiclearning.com/k12/ti_nspire/

## Virtual Geoboard

A snazzy virtual geoboard. You can teach just about any topic with a geoboard. If you don't have a class set of the real thing, get one!
http://nlvm.usu.edu/en/nav/frames_asid_125_g_1_t_4.html?open=activities&...

## Transformations - Translation

With this virtual manipulative you can create objects with pattern block pieces and explore Translations ("Slides") as transformations of the plane.
http://nlvm.usu.edu/en/nav/frames_asid_167_g_1_t_3.html?open=activities&...

## Transformations - Rotation

With this virtual manipulative you can create objects with pattern block pieces and explore Rotations ("Turns") as transformations of the plane.
http://nlvm.usu.edu/en/nav/frames_asid_207_g_1_t_3.html?open=activities&...

## Transformations - Reflections

With this virtual manipulative you can create objects with pattern block pieces and explore Reflections as transformations of the plane.
http://nlvm.usu.edu/en/nav/frames_asid_206_g_1_t_3.html?open=activities&...

## Tesselations

Choose some shapes and try to tesselate the plane with them.
http://nlvm.usu.edu/en/nav/frames_asid_163_g_1_t_3.html?open=activities&...

## Virtual Tangrams

Tangrams are a versatile manipulative. They can be used to build understanding of geometry, fractions, area and other topics. This is a Java implementation of tangrams.
http://nlvm.usu.edu/en/nav/frames_asid_268_g_1_t_3.html?open=activities&...

## Virtual Platonic Solids

This virtual manipulative allows you to display, rotate, and resize Platonic solids. It also allows you to select vertices, edges, and faces, and observe that the number of vertices minus the number of edges plus the number of faces is always equal to 2 (Euler's formula).
http://nlvm.usu.edu/en/nav/frames_asid_128_g_1_t_3.html?open=instruction...