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°)

February 28 RECAP

“Pure mathematics is, in its way, the poetry of logical ideas.”

Albert Einstein

Like I mentioned in class today, your assignment is to read this quote from Albert Einstein and write a 2 page paper over what you think it means. Be sure to include examples of why you believe what it means. The paper must be in the APA format. (Times New Roman 12pt font, double spaced, title, header with page numbers and title, etc) 

Also, remember that there will be a test on Friday. We will review Wednesday and Thursday.

Tuesday Feb 22 Snow Day Assignment

Since we did not have class today I decided to give an online assignment that is due by Friday. You each must find any ten cities in Ohio and create a graph of the snowfall in inches for each city. It must be a bar graph and it has to be done on graph paper. Make sure you label the X axis, Y axis, and a title. When you are finished with the graph, find the average (mean) snowfall for the ten cities. Then, find the median and mode. Remember that the mode is the number that appears the most. A good site to use is this link. If you need help with finding the mean, median, or mode then click here. Good luck and make sure you bring your final assignment to class on Friday. Be creative, use a ruler, and make sure your data is accurate.

Group PROJECT day

For today, I will split the class into five different groups. We will be working on a group project together and then presenting it to the class. The assignment is to create a PowerPoint that you will have to use to teach to the class. Each group will be assigned a chapter in the book where they have to share the information to the rest of the class. Your presentation should last for the entire class period. You are required to also make an assignment for the class to complete after your presentation is completed. It can be a worksheet or educational game. Good luck and have fun. I will be walking around to help if needed

February 16 Add and Subtract with negative numbers

Adding and Subtracting positive numbers with negative numbers. 

Example: 5+(-7)

for this example, since the + cancels out by the -, you would solve this problem like 5-7 while ignoring the addition sign.

Example 2: 8-(-4)

since it is subtracting a negative number, you will instead act as if its a positive and add so it would be 8+4

I have posted a quiz. Take the quiz and it will be due by the end of the class. Post your  results onto your blog account so I can take a look at it.

February 15 Negative and Positive numbers

Daddy, people think really small numbers are easy to work with, but they are not, because really small numbers are really big negative numbers" (Eamonn Ryan, age 4, self-proclaimed mathematician).

Good afternoon class. Today is all about negative and positive numbers. As you all know, positive numbers are infinite. Well, negative numbers are also infinite but they are negatively infinite.

The assignment for today will be to create a graph with the temperatures of any city in Alaska for the entire month of February so far. Keep in mind that there are negative and positive numbers involved. You can find this information at weather.com.

Wednesday February 2

“Arithmetic is being able to count up to twenty without taking off your shoes”

"Plato"

Good afternoon class. We do not want to be an underdog like Plato so we will be working on mental math today without using our fingers and toes. I will pass out a piece of paper and you will have 50 questions involving only mental math. NO CALCULATORS! This will include a little bit of addition and subtraction as well as a lot of multiplication and division. This assignment will be worth 20 points and it is due at the end of the class. Good luck

Monday January 24 Work with Fractions

Quickly get out a pencil and piece of paper and answer these three questions. Turn in your completed work to the substitute teacher.
1. Convert 83% to a decimal
2. Convert 3/20 to a percent
3. Solve 1/2 plus 7/8

Good afternoon class! I hope you all had an enjoyable weekend. Today we will be learning in an interactive way about fractions. Since I am out sick today, I will show you a video of what you will do today. First go to this link to find where we will be working.

Now, click here for the video of how to do the math and where to find it. Good luck

Friday January 21

Gert Mittring, a 38-year-old German with degrees in psychology, education and computer science, needed only 11.8 seconds to calculate the 13th root of a 100-digit number in his head, setting a new record.

http://www.factme.com/category10.html

For todays class, I will split you up in pairs. You will then have to work on a worksheet for the remainder of the class. The worksheet involves basic algebra concepts. Good luck.

Here is a picture of Gert Mittring

Thursday January 20

Gaurav Rajav, a 15-year old Virginia high school student, recited 8,784 digits of Pi — the non-repeating and non-terminating decimal — likely placing him among the top Pi-reciters in the world.

He had hoped to recite 10,790 digits and set a record in the United States and North America. He says, "I'm kind of disappointed, but I guess I did OK."

http://www.factme.com/category10.html

Good afternoon class. Everyday we will have a math fact to start off and then start with our assignment. For today's assignment, each of you will have to memorize at least 15 digits of Pi. Imagine how hard it was for Gaurav Rajav to memorize 8,784 digits. 

Practice Post

Hi. My name is Kalie