Virtual Nerd
Virtual Nerd: What Is a Variable?
Watch this tutorial to learn about variables which are an essential but confusing part of algebra. [1:40]
Other
Understanding and Making Maps Symbols
Explains what symbols are, and how they are used on maps and in a map key. [2:26]
Khan Academy
Khan Academy: Contemporary Chinese Seals by Li Lanqing
Seals have been symbols of identity and authority in China for more than 2,500 years. This exhibition features over 100 exceptional seals made by artist Li Lanqing, who has revived and transformed this traditional art. [6:34]
Sophia Learning
Sophia: Signs: Lesson 2
This lesson introduces the concept of signs as mathematical symbols that express information about a number. It is 2 of 6 in the series titled "Signs."
Sophia Learning
Sophia: Signs: Lesson 4
This lesson introduces the concept of signs as mathematical symbols that express information about a number. It is 4 of 6 in the series titled "Signs."
Sophia Learning
Sophia: Arbitrary Symbolism: Lesson 2
A screencast lesson introducing arbitrary symbolism. A three-questions quiz to check for understanding is also available. [3:58]
Sophia Learning
Sophia: Note Taking: Symbols and Abbreviations: Lesson 1
This lesson introduces using symbols and abbreviations to take notes. It is 1 of 2 in the series titled "Note Taking: Symbols and Abbreviations."
Sophia Learning
Sophia: Identifying Symbols
This lesson explains how to identify symbols in fiction writing. This tutorial lesson shares a short screencast [9:26] with the lesson's content.
Brightstorm
Brightstorm: Defining Variables
A defining variable is a symbol, such as x, used to describe any number. When a variable is used in a function, we know that it is not just one constant number, but that it can represent many numbers. Variables are instrumental in...