7th Grade Ex Cr due April 8, 2013

1. Re read pg. 5 1.1 Walking Marathons and pg. 6 Problem 1.1 Finding and Using Rates. 2. Go outside. You are about to model the activity we did in class two weeks ago. Measure off a section of land or sidewalk. Record the distance (in units). Ask a friend to help you. Obtain a stopwatch (or some way to measure seconds). Record the time it takes to do from section to the far end of the section while walking. Now, repeat the process while running. 3. Now, watch the video below to figure out the next part of your extra credit. 4. Answer the following questions, remember D = r(t) or M = r(s): a) If you were walking at your rate, how far did you travel in 30 seconds? If you were running at your rate, how far did you travel in 30 seconds? b) If you were apart of a walkathon and charged $5 per unit you walked, how much money would you get if you walked for 60 seconds? How much money would you get if you ran for 60 seconds?

Hey, 8th Graders...This will help with graphing!

This week and after spring break....we will be graphing the solutions to a system of equations. Next week I will post a review problem to be turned in for extra credit. Here is a video on converting standard form equations to slope-intercept form equations.

Honors Algebra - Factoring ATrinomial

Here is an in depth video on factoring a trinomial by Khan Academy. Enjoy!

Solving Linear Equations on Both Sides of Equal Sign

So here is a nice video by Khan Academy to illustrate solving equations on both sides of the equal sign.

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!