An EQUATION is a number sentence with two sides that are equal.

An equation says that two things are equal. It will have an equals sign "=" like this:

x | + | 2 | = | 6 |

That equation says:

**what is on the left (x + 2)****is equal to what is on the right (6)**

A SYMBOL is a picture that is used in place of a number or words.

A pattern or image used instead of words.

Another example: "+" is the symbol for "plus"

An UNKNOWN is a number you are trying to find in an equation.

The letter "x" is often used in algebra to mean a value that is not yet known.

It is called a "variable" or sometimes an "unknown".

In

**x + 2 = 7**, x is a variable, but we can work out its value if we try!
A variable doesn't have to be "x", it could be "y", "w" or any letter or symbol.

PARTITIONING is when you split something up into equal parts or shares. This is a great website to explain partitioning! http://www.theschoolrun.com/what-is-partitioning

https://www.youtube.com/watch?v=OH28l1lP5RM Partitioning with division.

https://www.youtube.com/watch?v=OH28l1lP5RM Partitioning with division.

IXL has great practice for this standard. LearnZillion has terrific lessons on this standard. Khan Academy is also a great resource!

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