The instructor in this video is outside (in a parking garage) and uses a concrete wall and chalk for demonstration. He indicates that his videos are for a high school audience, but here he goes back to the basics of addition and subtraction. (04:49)

This Language of Mathematics video the instructor goes 'back to basics' using the 'real number set'. He uses a chalkboard to model what real numbers are and how they are organized. Straightforward and easy-to-understand. (08:53)

The instructor uses a chalkboard to demonstrate multiplying and dividing multi-digit whole numbers. Because the instructor is outside in a parking garage, demonstrating with chalk on a concrete wall, the traffic sounds are distracting. In spite of t...hat, the instruction is good. (06:44)[more]

The instructor moves inside for this session of his video series, so there is no background noise. In this session, the instructor explores negative numbers using a number line. (08:05)

In this Language of Mathematics video the instructor continues his demonstration of the real number system and how it is broken down. He starts off by speaking of the number zero and the impact of the breakthrough of the 'discovery' of this number.... (09:01)[more]

The instructor continues in his series by discussing prime numbers and rational and irrational numbers. How many numbers are there between 1 and 20. This instructor says there are only nine numbers between 1 and 20. Watch this video and find out why.... He assumes his audience is a high school audience, but middle school and upper elementary may benefit from this video as well. (09:44)[more]

In this brief video, the teacher lays out the Language of Mathematics lesson and his video format for his video series. The format is as follows: lesson, exercises, solutions, supplemental video. The instructor encourages the learner to work one p...roblem at a time and then check solution. (02:14).[more]

This video is the introductory video to the series: The Language of Mathematics. The instructor in this video says that math is a language--math uses numbers instead of letters. He states that there are two things you can f\do to improve your math s...kills: (1) reduce the use of a calculator and (2) educate yourself. (07:47)[more]

The instructor uses a chalkboard outside to explain and model what prime numbers are and to demonstrate how to find the prime factorization of a composite number. Several examples are modeled. (03:43)

Please make your comments on categories positive, and not just negative.

People work hard on educational categories, and we want to encourage them to make more!

Profanity (curse words), sexually suggestive remarks, and other such obviously inappropriate comments
will be deleted immediately, and are grounds for immediate expulsion. Remember, children use this website.

Personal criticism on project forums and in video content is not allowed and will be deleted immediately.
Any violations of this rule could result in expulsion from the project so please, no insults or other negative
personal remarks.

Very harshly-worded criticism of content will also be deleted promptly. Please use your vote to express your
harshest feelings. Repeated violations of this rule can result in expulsion. If you must criticize another
person's hard work, then be nice about it.

People work hard on educational categories, and we want to encourage them to make more!