The surface z = x^2 -y^2 is generated by sliding the curve z = -y^2 from the y-z plane along the curve z = x^2 in the x-z plane.

This animation represents level surfaces of the function f(x,y,z) = x^2 +y^2 -z^2. The graph of this function is a 3-dimensional solid in a 4-dimensional space - a hypersurface!

This timer will help you practice TOEFL Speaking Questions 1 and 2. This video provides preparation and response timing.

I cover both the case of a monomial dividing into a polynomial, and the case the monomial is not a factor of the polynomial. Give it a view and tell me how you like it.

Illustration of online tutoring.

Just a brief introduction to myself.

Word Problem Mixtures as tested on the GRE, GMAT, ACT and SAT

Video shows how to find the total distance of cable needed to support a rectangular canopy with 4 poles at each corner.

I'm putting myself out there right now so that you can see just how clearly I speak these languages - and so that you can see how clearly you'll speak them, too. It is, indeed, very important to speak with a good, authentic accent. Don't learn from...

Learn Spanish and sign Language with me.... feel free to contact me.

Approximately 3 minutes. Played by memory using my special memory technique that I teach to intermediate level students.

Fast Math Tricks of Calculation

When asked to factor a quadratic equation such as 2x^2 - 7x -15, many students are uncomfortable with the guess and check method. I created this video to describe a 7 step method that requires NO GUESSING.

Do you want a teacher who will teach you everything you need to know to read, write and speak Japanese? I gained my native pronunciation by living with two Japanese families, attending a Japanese college in Osaka, working in management for a Japanese...

This is a sample beginning phonics online lesson.

Basic tutorial on how to represent real world situations (i.e. Pizza!) into fractions and percents.

A video showing the detailed procedure to do long division of numbers.

Frog Heart Experiment
Purpose:
To examine the effects of pre-tension, temperature, and various drugs on the frog heart muscle,
specifically contraction strength and heart rate.
Background:
There are a number of external...

Here's my intro video to learn more about how I teach, train and tutor people. Its all about building competency and confidence.

This PowerPoint presentation is one I have created and used as an enrichment teacher at Farmington's Continuing Education Program to assist students in writing effective SAT essays, college application essays and essays in general.