Hey, Algebra Class...Elimination Method!

This week in class....

Hello, everyone! This week we have been discussing Solving a System of Linear Equations in Algebra Class. Here is a video on Solving a System of Linear Equations using the substitution method. In class we are doing problems similar to pg. 466 #10-15 in our text. In 7th grade, we are following the algorithm: Start Change End with integers applying it to temperature. For example: Start with 6, change with -15, and end with -9. That is, 6 + -15 = -9. In the regular 8th grade, we are reading graphs and tables to identify linear, quadratic, or other functions. For example: x = {1,2,3,4,5,6} and y = (8, 20, 36, 56, 80, 108} The change in x is +1. The change in y is +12, +16, +20, +24, +28. The second change in y is +4, constantly. So the function with this x and y values is quadratic.

The Rice Problem is Exponential Growth!

An Important Math Video

Here is an important math video that has relevance to 7th and 8th grade mathematics. For 7th grade, ask yourselves: "How do rates and proportions fit into this video?" For 8th grade, ask yourselves: "How does accelerated growth fit into this video?"

7th Grade Video on Comparing and Scaling

Here is preview of the lesson we are beginning.

Special Triangles from Class Folks!

There are two special right triangles that use the Pythagorean Theorem. Here is a video on the 45-90-45 right triangle. Here is a video on the 30-60-90 right triangle.

Algebra Review on Inequalities

Here is a quick review video on inequalities. Later there will be a video on solving linear equations.