Welcome BACK!

Helllloooooo my lovely mathlings! Welcome back! Are you ready to get into some Algebra?!

This post will be your lesson for Tuesday if I'm not here.

1) First, please watch the following videos on the Smartboard as a class:

https://www.khanacademy.org/math/algebra/introduction-to-algebra/variable-and-expressions/v/what-is-a-variable

https://www.khanacademy.org/math/algebra/introduction-to-algebra/variable-and-expressions/v/what-is-a-variable

2) Next, grab a Pre-Algebra book off the shelf (they're the blue ones!). Read through pages 4 and 5 in your textbook individually. Be sure to read through the examples, too! The main points we should take away from this chapter are:

- A variable is a letter that stands for a number.

- A variable expression is a mathematical phrase that uses variables, numbers, and operation symbols (operation symbols are things like the plus sign, minus sign, division sign, etc.)

- You can express a mathematical concept using variable expressions - see the chart on pg. 5. For example:
Let's say I've just returned from the grocery store. I've purchased several packages of brownies. There are four brownies in each pack. I can use a variable expression to display how many brownies I've eaten! If "b" stands for  packs of brownies, I can express the number of brownies I've eaten as b x 4, or 4b. Then all I have to do is plug in the number of packs for "b" and I know how many I've eaten! (If I've eaten 3 packs, I would express this as (3 x 4) and my total brownies eaten would equal 12 :)

Sidenote: I really, really want some brownies now.

(thewakingezine.wordpress.com)

3) Turn to one of the sections in your 3-subject math notebook and record the two key terms above and their definitions. Then, include in your notes an example that will help you - either one from the textbook or the one above. You can write this example out however you'd like to - keep it short and simple, make it long and detailed, or use pictures - whatever works for you!

4) With your group (the people at your table) - work together to complete pg. 6:

#s 4-12 and #s 18-20. Make sure all names are included on your group's page (you need only one) and then turn in your work (gray "PreAlgebra" bin up front). 

See you soon!