Geometric Shapes

There are many different kinds of shapes. For our next unit, you will be required to know the followings shapes.

Quadrilateral: A four-sided polygon. The sum of the angles of a quadrilateral is 360 degrees.

Rectangle: A four-sided polygon having all right angles. The sum of the angles of a rectangle is 360 degrees.

Square: A four-sided polygon having equal-length sides meeting at right angles. The sum of the angles of a square is 360 degrees.

Parallelogram: A four-sided polygon with two pairs of parallel sides. The sum of the angles of a parallelogram is 360 degrees.

Rhombus: A four-sided polygon having all four sides of equal length. The sum of the angles of a rhombus is 360 degrees.

Trapezoid: A four-sided polygon having exactly one pair of parallel sides. The two sides that are parallel are called the bases of the trapezoid. The sum of the angles of a trapezoid is 360 degrees.

Pentagon: A five-sided polygon. The sum of the angles of a pentagon is 540 degrees.

Hexagon: A six-sided polygon. The sum of the angles of a hexagon is 720 degrees.

Heptagon: A seven-sided polygon. The sum of the angles of a heptagon is 900 degrees.

Octagon: An eight-sided polygon. The sum of the angles of an octagon is 1080 degrees

Nonagon: A nine-sided polygon. The sum of the angles of a nonagon is 1260 degrees.

Decagon: A ten-sided polygon. The sum of the angles of a decagon is 1440 degrees.

Math Review

Sit in your seats and log on to your computers. Once logged in, go to this site and print out the worksheet. Everyone has only 10 minutes to do the worksheet so work quickly.

Once completed, pass your papers into the front of the room. I will then randomly pass them out to the class and we will grade each others.

When everyone is done with that, we will play online math games today as a review of fractions. Click here and enjoy. Make sure you are only playing games that deal with fractions. If you are not, then consequences will be made.

Biography of Women Mathematicians

Today, we will be going to the computer lab to work on our projects of the semester. The project will consist of each student picking a woman mathematician and create a PowerPoint presentation about that woman.

Did you know that the Association for Women in Mathematics is celebrating its 40th anniversary this year!!  source

In your projects, you must include:

• the name of your woman
• Location of birth
• Prizes, awards, and honors for woman
• birth and death anniversaries
• a picture of you woman

Example:

Carol Karp lived from August 10, 1926 to August 20, 1972. She was born in Forest Grove, Michigan. 

Mathematical Patterns

Must watch video! This video is very interesting and is a good example of using patterns to figure out math problems more quickly. 

Here is our activity for today.

1. Select a partner and I will come around to assign each pair "A" or "B".

2. I will then pass out links to each pair in the class.

3. Each pair will create a pattern.

4. After a short period of time, enough to get the pattern started, the A's pass their patterns to the next pair of A's, and have the B's pass theirs to the next pair of B's.

5. This group will try to figure out the pattern and continue it. Then, pass the patterns to the next set of pairs.

6. We will continue this until the patterns are resumed to their creators.

7. Then, each pair will stand up and share their original and ending patterns with the class.

This will be the start of us learning how to use patterns to find results of math patterns more quickly.

Game Day!!

Today is a game day. Everyone go ahead and get to their computer seats. Go to www.coolmath.com. On the left hand side, click on the prealgebra section. Everyone must play factors and prime, intro to fractions, and fractions. When you get your score at the end, you must send me the link to my e-mail address. If you finish early, you may move on and play any other math game that you would like. If I catch you on a different website or not doing your work then it will result in an automatic detention.

Practice Quiz

Below is a practice quiz so I expect you all to take it so we all get As on our real quiz tomorrow. If you have any questions feel free to ask me.

Metric Units

1 Kilometer (km) = 1000 meters

1 Meter = 100 Centimeters (cm)

1 Meter = 1000 Millimeters (mm)

1. Which is longer? Circle your choice for each one. 

a. 1 mile or 1 kilometer     b. 1 yard or 1 meter    c. 1 inch or 1 centimeter 

2.  Complete each statement. 

a. 1 mi = ________ km     b. 1 yd = _________ m      c. 1 in = ________ cm 

3. The basic unit of length in the metric system in the _________________ and is represented by a lowercase ____. 

4. The meter is defined as the _______________ traveled by _______________ in absolute vacuum in 1⁄299,792,458 of a second. 

5. Complete each statement. 

a. 1 km = ___________ m     b. 1 m = __________ cm     c. 1 m = __________ mm 

6. Which is larger?  Circle your choice for each one. 

a. 1 meter or 105 centimeters      c. 12 centimeters or 102 millimeters 

b. 4 kilometers or 4400 meters    d. 1200 millimeters or 1 meter 

7. How many millimeters are in 1 centimeter? __________ 

Metric System Homework

The standard unit of length in the metric system is the meter. Other units of length and their equivalents in meters are as follows: 

1 millimeter = 0.001 meter

1 centimeter = 0.01 meter

1 decimeter = 0.1 meter

1 kilometer = 1000 meters

We symbolize these lengths as follows:

1 millimeter = 1 mm

1 centimeter = 1 cm

1 meter = 1 m

1 decimeter = 1 dm

1 kilometer = 1 km

These four questions will be due Monday right before class. 

1.      An adult's height may be about

1) 1.7 km               2) 1.7 mm                  3) 1.7 cm                     4) 1.7 m

2.     The longer edge of a credit card is about

1) 8.5 mm              2) 8.5 cm                     3) 1.7 cm                     4) 1.7 m

3.  The thickness of the wire in a paper clip is about

1) 1 mm                 2) 10 mm                     3) 1 cm                        4) 10 cm

4.   The width of this sheet of paper is about

1) 22 m                  2) 22 dm                      3) 22 cm                      4) 22 ml

Introduction to the Metric System

I have listed below a table of the prefixes, symbols, factor numbers, and factor words that you will need to know for our quiz on Friday.

Prefix	Symbol	Factor Number	Factor Word
Kilo	k	1,000	Thousand
Hecto	h	100	Hundred
Deca	da	10	Ten
Deci	d	0.1	Tenth
Centi	c	0.01	Hundredth
Milli	m	0.001	Thousandth

Remember that the prefixes can be used with any form of measurement such as volume, mass, and length. For your homework assignment of the day, you will first have to measure the length of a textbook. After this is done, you are required to weigh the same textbook and then find the volume of it. These measurements have to be in metric units. 

When you find the length of the textbook, convert it to centimeters.
After you find the mass of the textbook, convert it to decagrams.
When you find the volume of the textbook, convert it to centimeters.

This will be due at the beginning of the class.

March 7 more with angles

DEFINITIONS FROM CLASS

1. Line: has no beginning point or end point.  Imagine it continuing indefinitely to both directions. We can illustrate that by little arrows on both ends

2. Ray: has a beginning point but no end point.  Think of sun's rays: they start at sun and go on forever.
3. Angel: made up from two rays that have the same beginning point.  That point is called the vertex and the two rays are called the sides of the angle.


From the picture above and from class today, an exterior angel is the angle between any side of a shape and a line extended from the next side.

March 2 Angles

Activity to do at the beginning of class

Identify each of the angles in the pictues

Acute Angles: Angles smaller than a right angle (less than 90°) 

Right Angle: An angle equal to 1/4 turn (90°)

Obtuse Angles: Angles larger than a right angle and smaller than a straight angle (between 90° and 180°)

Reflex Angles: Angles larger than a straight angle but less than 1 turn (between 180° and 360°)