A lesson on circle basics: circle definition, chords, diameter, radius, circumference, area of a circle, interior of a circle, exterior of a circle
YouTube presents How to Find the Volume of a Pyramid an educational video resources on math.
The other frequently occurring shape is the cylinder. This video will introduce the cylinder and teach you the formulas for finding its surface area and volume.
Special Right Triangles in Geometry: 45-45-90 and 30-60-90 degree triangles. In this video, I discuss two special right triangles, how to derive the formulas to find the lengths of the sides of the triangles by knowing the length of one side, and then do a few examples using them!
The Law of Cosines, Example 4. Here we use the law of cosines to help deduce an angle between the flightpath of two planes!
Significant digits (significant figures, sig figs) indicate the precision of a measurement. This lesson explains how to determine the number of significant digits in a measurement. For practice problems and additional chemistry lessons, visit http://www.getchemistryhelp.com.
This video tutorial teaches how to form comparative and superlative adjectives.
Leanne compares the different past tenses in English. She presents the past simple + past perfect simple construction.
Mark presents the most popular time connectors (or conjunctions).
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