In this activity, students explore the relationships among area formulas for parallelograms, rectangles, triangles, and trapezoids. To grab an available object, swipe on the Touchpad to move the cursor into place and then press ctrl then click (center of the touchpad) for the “grabber hand.” Pay attention to the cursor’s appearance and any messages that appear to be sure you have selected the desired object. 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. Dynamic geometry software, such as the TI-Nspire geometry app, allows for motion that clarifies properties for students. Many geometric concepts are difficult to visualize, especially in a static paper-and-pencil environment. Read on for some ways I use TI-Nspire in my Geometry class. This power gets combined with linked multiple representations on TI-Nspire CX handhelds and software, enabling students to make rich mathematical connections in Geometry. Dynamic geometry software allows users to construct, measure and manipulate figures to explore geometry concepts and properties.
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