math Archives : T³ Learns

11Aug 2020 by Karen Campe

How to Use the TI-Nspire CX for Geometry

Classroom Practices, Geometry, Technology

Dynamic geometry software allows users to construct, measure and manipulate figures to explore geometry concepts and properties. This power gets combined with linked multiple representations on TI-Nspire CX handhelds and software, enabling students to make rich mathematical connections in Geometry. Read on for some ways I use TI-Nspire in my Geometry class. To Visualize Concepts Many geometric concepts are difficult to visualize, especially in a static paper-and-pencil environment. Dynamic geometry software, such as the TI-Nspire geometry app, allows for motion that clarifies properties for students. Students do not need to be expert users of TI-Nspire to work successfully with these ready-made documents; in many cases, knowing how to grab and drag a slider or object is sufficient. To grab an available object, swipe on the Touchpad to move the cursor…

How to Use the TI-84 Plus CE for Geometry

Classroom Practices, Geometry, Technology

When students interact with dynamic geometry software, they can construct, measure, and move figures to explore properties, confirm theorems, and visualize geometric situations. Lessons using this technology allow students to create their own geometry knowledge and are also more fun than reading properties and theorems out of a textbook. Here are some suggestions on how to use the Cabri Jr. App on the TI-84 Plus CE in your geometry class. Getting Started First, a quick “how-to” if you aren’t familiar with Cabri Jr.—the small but powerful dynamic geometry App preloaded on your TI-84 Plus CE (note that Cabri Jr. is available for the entire TI-84+ family). Press the apps button and select Cabri Jr. The menus F1 through F5 are accessed using the five keys under the screen: y=,…

Mathematics and Music – with TI-Innovator

Coding, Music, STEM, Technology

Hedwig's Theme for Penny! I recently visited my 5 nieces in Pittsburgh who are immersed in the Harry Potter book series. My oldest niece played Hedwig's Theme on the piano for me. I've been working on a session proposal for the 2018 T3 International Conference. I decided to submit a proposal on creating music on the TI Innovator Hub. As a demo, I wrote a program that plays the first few lines of Hedwig's Theme. Hedwig is Harry Potter's dear owl. Here is a video of the program being run on the TI-Nspire connected to the Innovator Hub. Ancient Greeks, in particular the Pythagoreans, are known as the first to investigate musical scales in terms of simple ratios. They discovered that a lyre string that is half the…