Find where to buy the TI-84 Plus CE graphing calculator in a variety of bold, fun colors.
Download free 90-day trial versions of the most popular TI software and handheld emulators.
Bring a new dimension of learning to your classroom with activities that put math in motion.
Explore teaching strategies to help students succeed on the SAT® and ACT® math tests using TI technology.
Drive deeper, more relevant understanding of science in middle grades and high school.
TI Connectivity CableUnit-to-Unit link cables
Students find the edge length of an octahedron when given its volume.
Students build a solution to a rather complex problem—finding the edge length of an octahedron given its volume—by solving two simpler problems.
First, students find a formula for the edge length of a square given its area.
After testing this formula by comparing points on its graph with the measurements of a model square, they write an equivalent formula with fractional exponents and substitute values to find the edge length of a particular square. Students will repeat this process for the formula for the edge length of a cube given its volume.
Finally, students solve an equation involving several different radical expressions to find a formula for the edge length of an octahedron given its volume, and use it to solve the original problem.
© Copyright 1995-2019 Texas Instruments Incorporated. All rights reserved.