Scribe Post for Monday, August 30-KT

Today in class, we went over word problems. We focused on the bar graph on page 14. The class went through answering the problems 83-87 using the bar graph to the right.

Jojo specified that when looking at a graph for an answer, just glancing at the information might give you the wrong answer. In problem 85, a common mistake made by all of the students was not properly reading the egg production difference between 2001 and 2002 in Minnesota (MN). Myself included, simply glanced at the graph and used the visual information to decided on my answer. As you guessed, I got it wrong. As you can see on the graph, the visual difference for Minnesota (MN) is practically unnoticeable, but the numbers show that there is in fact a produce difference of 12.

After moving on from problem 85, we discussed problem 87 using set builder notation to solve the inequalities in the original problem.

For problem 87, we set up the problem like this:

{x|2002 egg production in the millions (IN)}

{y|2002 egg production in the millions (MN)}

Then we read the information from the graph and subsituted 'x' and 'y' for the actual number of produced eggs in 2002. And got:

x={5973 million}

y={3124 million}

The original problem asked

us to answer if xy.

As a class we concluded the the answer was x>y, which could also be written as y.

**but in reality, what value did these numbers really have?

5973 million->5,973,000,000. so it's really five billion, nine hundred and seventy three billion. Yes, Jojo, billion, not trillion. Did you read that math correctly?**

After working in the book, we had a short discussion on our opinion of the homework assignment from last night. Most people didn't really have a clear idea of what they where supposed to put on the google doc. Many mistakes that people made where: not writing down the original problem, showing our work STEP BY STEP, then checking in the back of the book if your answer were correct (but in this case Jojo said it was okay if you didn't because someone else was checking it for you). If you ever forget, there is always the homework expectations link on the side if this blog. Click on the phrases: homework expectation to go to that link.

At the end of class, Jojo showed us a list of terms we need to know and understand for math.

Whole number (other sets of common numbers)

set builder notation- we used this in class today!

set listings

inequality signs

number lines

absolute value

mathapedia note:

To get the vertical line on you key board, press shift, then look for the key above the 'return' key and press the key while still holding the shift. other wise you'll just get this-->'\' instead of

this-->'|'. you use this for writing the absolute value, |a|, and for set builder

notation, {x|has x property P}.

Don't forget the check the home work assignments, and the homework expectations if you haven't already.

The next scribe will be Noa.

(^,^)/ bye!