Midpoint and Distance Formulas
The midpoint formula and the distance formula are introduced in algebra class. If students do not get a chance to discover how they are derived, they become yet another set of equations and processes to [...]
Ruler and Segment Addition Postulates
Most geometry books start with the fundamentals which can be confusing for students because the math itself is so easy. After working through the abstractness that is algebra, when we ask students to perform some [...]
Points, Lines, and Planes
Terminology and Symbols The concepts of points, lines, planes, line segments, and rays are crucial for creating a great foundation on which to understand Geometry. The symbolism is particularly important. Geometry starts with three undefined [...]
Families of Graphs
One of the benefits of graphing calculators and graphing software is that it allows you to learn things about functions and equations that would have been tedious to explore via pencil and graph paper. Families [...]