Name: Algebra 7 - Bounded versus Unbounded Intervals @MyWhyU
Uploaded: 2012-07-25T01:29:31-0400
Duration: 8 min 17 s
Description: Bounded intervals may be either open or closed. Closed intervals contain a maximum and minimum number, but why is it impossible to find the maximum or minimum number in an open interval?

Pre-Algebra 2 - Roman Numerals, Sign Value vs Positional Notation (rev 2) @MyWhyU

Uploaded October 2021 | Updated September 2026, 3 weeks ago

Roman numerals are an ancient base-10 natural number system. Understanding Roman numerals (a sign-value notation) can shed light on our modern number system which uses positional notation. (This revision corrects a mistake at 2:03 where "CM" was not displayed correctly.)

Pre-Algebra 2 - Roman Numerals, Sign Value vs Positional Notation (rev 2)

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