Geometry 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=,…

Blending Technology with Paper and Pencil

Classroom Practices, Geometry, Technology

My geometry class is 1:1 this year; each student has her own MacBook Air. Students share responses to questions digitally in class using TI-Nspire Navigator for Networked Computers. Students explore mathematics using TI-Nspire dynamic graphs and geometry software. We use Canvas, an online learning management system, for assignments. We use Google Drive for sharing electronic documents with each other, and we use MathXL, online homework with built-in learning help, to practice mathematics. What place does pencil and paper have in my students’ learning and understanding of mathematics? Even though many of the tasks that my students do for geometry take place digitally, I am convinced that pencil and paper plays an important role in how much mathematics my students not only learn but also remember. In a Wall…