Gregory Teschner

A short 5 or so min video which solves a linear programming word problem about airplane manufacturing.

A video explaining the construction of angle bisectors and the incenter of triangles.

A 5 min video with multicolor using smart board technology explaining how to handle variables on both sides of an equation.

A video explaining and demonstrating the construction of altitudes and the orthocenter of a triangle.

A short 5 min video that uses Interwrite technology to explain the contruction of medians and then the centroid of triangles.

A video explaining and demonstrating how to change a quadratic from standard to vertex form by completing the square.

A video explaining and demonstrating how to complete the square.

A video explaining and demonstrating how to solve a system of 3 equations and 3 variables.

A video explaining and demonstrating the solution to a system of linear equations in two variables using the substitution method.

A video explaining and demonstrating solving a system of two linear equations using the elimination or linear combination method.

A video explaining and demonstrating how to sketch a parabola given a quadratic equation in vertex form.

A video which explains with multicolor graphics how to write the vertex form of a quadratic equation given its graph.

A video explaining and demonstrating how to rotate a triangle "x" degrees around a point.

A Video explaining the constuction of perpendicular bisectors and the circumcenter of a triangle.

A video which explains and constructs the solution to a linear programming problem.

A Geometer's sketchpad rendition video explaining congruent figures.

A short 5 min video with multicolor illustration and audio solving multi step linear equations.

Using Interwrite and screen capture software, this video provided a multicolor explanation of solving linear equations.