Sunday, September 19, 2010

Equationsquiz 1

The video below explains how to answer the first ten questions on the quiz.

Friday, September 17, 2010

Multi step equations

Remember that you should simplify what you can when you do these problems. If you see that you need to distribute, do so. If you see that you need to combine like terms at the beginning of a problem do so.


The videos below demonstrate how to solve some multi step equations. These are student created explanations.



Saturday, September 11, 2010

Algebra Homework

Friday we practiced solving equations with variables on each side. The page below contains the questions assigned as homework.

Wednesday, September 1, 2010

Algebra : Rewriting equations and formulas

The following video demonstrates how we can solve for a variable in an equation or formula. This is necessary sometimes because a formula may express a relationship one way, but we may find that it is necessary to express that relationship with respect to a different quantity. For example in the formula A= bh we may be asked to express the relationship with respect to the base. In that case the formula would read b=A/h.


Unfortunately I will have to post this video again as the revised explanation of the last problem was not complete.


Algebra : Solving proportions with the cross product

The following video demonstrates how we can use the cross product to solve a proportion. Remember that this is a method of last resorts. Sometimes the cross product may be more work than is necessary. However, if performed correctly, the cross product will produce the correct result.


Algebra : Solving proportions with variables- method1

The following video demonstrates one way to solve proportions.

Algebra : Solving equations with variables on both sides

The following video demonstrates how to solve equations with variables on both sides.

Algebra : Solving multi step equations

The following video demonstrates how to solve multi step equations.


Algebra : Solving two step equations

The following video demonstrates how to solve two step equations.


Algebra : Solving one step equations

The following video demonstrates how to solve one step equations.

Algebra prerequisite: order of operations

It is important to understand order of operations as this is fundamental to a lot of algebra concepts. The following video demonstrates how to evaluate an expression using order of operations.


Also you may click on this link to see a related order of operations video.