Click here to access the class notes on Inv 1.1 and 1.2

**Focus Question:**How can you find the total value of a combination of positive and negative numbers?

**Focus Question:**How can you use the number line to compare two numbers?

Click here to access the class notes on Inv 1.1 and 1.2

In this unit, the focus is on understanding and developing systematic ways to add, subtract, multiply, and divide positive and negative numbers. Students will develop algorithms for computations and will use the order of operations, the Commutative Property, and the Distributive Property to solve problems.

Math Team Challenge #2 10/17/16

- John took a picture to a copy machine and had a copy made, not realizing that someone had left the machine set for a reduction to 80 percent of the original size. What percent setting will John have to use on the copy machine to obtain from his reduced copy a picture with the original dimensions?

- Mr. Corey is wrapping a gift for Mr. Warshaw. He wants to cover the 8 inch x 10 inch x 5 inch box with wrapping paper. How many square inches of of paper will he need if the paper fits perfectly over the box? How much ribbon will he need if the bow itself adds 15 inches?

- At this time of year many postal workers have to work overtime, so a supervisor at one large post office planned a late-night snack for the employees. She ordered 1 extra-large pizza for every two workers, 1 large bag of potato chips for every 3 workers and 1 two-liter bottle of cola for every four workers. When the order arrived, 26 items were delivered. How many employees were working that evening?

We are finishing up our first math unit, Shapes and Designs.

The Unit Test is scheduled for Friday 10/21.

Start studying now to make sure you're ready!

2. Benchmark angles

3. Measuring angles

• S (sum of angles) = 180 (n-2)

• A (individual angle in a polygon) = 180 (n-2) / n

2. Finding exterior angles in a polygon.

• The sum of the two shorter sides must be greater then the longer side in a triangle

2. How to create a unique triangle:

• SAS (side-angle-side),

• AAS (angle-angle-side),

• SSS (side-side-side),

• ASA (angle- side-angle)

3. Finding angle measures when given parallel lines and transversals.

• supplementary angles

• complementary angles

• isosceles/equilateral triangle properties

• parallelogram/square/rectangle properties

• angle sums for regular polygons

• Specific ACE Problems or Investigation Problems to review to review:

•Inv 1 ACE: #10 page. 27, Check-in Quiz, Problem 1.4 C and D page .21

•Inv 2 ACE: #1 page. 52, #12 page. 54,

•Inv 3 Problem 3.2 A, ACE #9 page. 77, Problem 3.4 B and C page. 70

• Check-in 1 and Partner Quiz Inv 2

- Are there special conditions for the side lengths of a triangle?
- Can a triangle be built with any three side lengths? Explain.

Link to Math Warehouse Triangles sides and angles.

**Here are some images of our kids using the polystrips.**

In preparation for tomorrow's Skill's Quiz, please review your skills sheets, pay special attention to problems you had trouble with.

Try them again and check your answers. You can review the answers here.

If you'd like additional practice on specific problems, try these sheets:

Try them again and check your answers. You can review the answers here.

If you'd like additional practice on specific problems, try these sheets:

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