Parallelogram Method

Parallelogram-a 4 sided polygon with opposite sides parallel.
We use the parallelogram method when there are situations with simultaneous vector addition, NOT stacked/chronological order.
Steps:
1)Create V1 with the tail on the origin
2)Create V2 with the tail on the origin.
3)Create 2 parallel sides to make a parallelogram
4)Create the resultant vector starting from the tail of V1 and V2(the origin) to the intersection of the parallel sides

Vector Addition

We started vector addition today. These are the steps for the triangle method:

1-Starting from some origin, create a vector(to scale), that has the tail on that origin

2-From the head of the original vector(v1), square it(make another origin) for measurment.

3-Create V2, V3, V4, etc... and "square up" each vector head for measurment.

4-Create the resultant vector from the origin(starting point) to the head of the last "added" vector.

*Resultant vector is a vector from the tail of the original vector(origin), to the head of the last added vector*

We did an example on Euklid, and to "square up", in the construct tab there is a "parallel" button. Click that, then click the point you want to square up(the head of the last vector), then the X or Y axis to make it parallel.

Driveway Question-Portfolio

At the start of class we had conversations about starting a Facebook group for our math class, and then watched a video on Media Literacy. The video showed us how far technology has come in the last 6 years(with Facebook and My Space), and how in 25 years something like a computer could fit in a blood cell, thats how small it could be.

When we finished the video Mr.Max showed us a few steps to finish the Driveway question from our Portfolios. -First we had to figure out the area of the driveway.

-Then for each method we figured out how much would have to be dug down for the excavation.

-Once you have done that, you find out the cost of each type of material for each method needed in cubic yards(1 yard cubed is equal to 27 feet cubed). To find the cost I multiplied the depth by the area to find feet cubed, then divided the answer by 27 to get yards cubed. After I did that I multipled it by the price per cubic yard.

-When you have calculated the cost of materials and the cost for excavation for each method, you find the total cost it would be without taxes or labour costs.

The rest of the question was due for the next day