Mathematics

 To view the videos just click on the link then click on "Go to link"

Our next topic will be Prime numbers. View the video below to learn about Prime Numbers

Math Video: How to Recognize Prime Numbers
http://www.mathplayground.com/howto_primenumbers.html

 Here are some questions to consider for discussion in our next Math class:

• What are prime numbers?
• Why is 9 NOT a Prime Number?
•  What is a factor?
• What name is given to numbers that have more than two factors?
• Is zero a Prime Number? What do you think?

 
Students I know some of you were having problems in computing long division. Here is a video for you to view so that you will have a better understanding of how to do long division.

 Math Video: How to Do Long Division
 http://www.mathplayground.com/howto_longdivision.html 

 Math Video: How to Learn Multiplication Facts

http://www.mathplayground.com/howto_learnmultfacts.html 

Multiplication using the BOX METHOD

Here's how the "box method" works: 23x7  

First you divide the larger number into its separate parts. Here, 23 become 20 and 3.

Next, you multiply each separate part — 20 x 7 and 3 x 7.

Finally, you add all the products together. 140 + 21 equals 161, the product of 23 x 7. 

See how it works!!

 

MAP SKILLS

Read the Information below carefully and prepare for class discussion about the topic on Friday

Maps are representations of the world created by people called cartographers to help other people navigate the world. Maps contain information tailored to a specific purpose.

A road map, for example, contains information that helps the reader get from one place to another using a vehicle. The maps found in a geographical atlas will contain information such as how the land in a place is used, the population density and the political boundaries that exist between regions, states and nations.There are five important things you need to know so as to read a map successfully: 

 compass direction

•  grid reference
•  map key
•  title 
•  scale

Compass directions

Compass directions are important for finding your way around a map. There are many ways to remember where each direction goes. Starting at the top and moving clockwise the directions on a compass or map are: North, East, South and West.

                                             

Compass

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What is a Map Key/Legend?

Maps can be drawn to represent a variety of information. This information might include things such as roads, tourist attractions and campgrounds, or they might represent the latest weather patterns. The objects on a map are represented using symbols. A symbol is a picture on the map that represents something in the real world. Understanding these symbols requires the use of a key. Maps use a key, or legend, to explain the meaning of each of the symbols used in the map. These keys usually show a small picture of each of the symbols used on the map, along with a written description of the meaning of each of these symbols.

Diagram of a map key    

LINES OF LATITUDE and LONGITUDE

Read the Information and view the video below carefully and prepare for class discussion about the topic on Tuesday

Latitude and longitude are imaginary (unreal) lines drawn on maps to easily locate places on the Earth. Latitude is the distance north or south of the equator (an imaginary circle around the Earth halfway between the North Pole and the South Pole) and longitude is the distance east or west of the prime meridian (an imaginary line running from north to south through Greenwich, England). Both are measured in terms of the 360 degrees (symbolized by °) of a circle.

The Equator is the line of 0° latitude, the starting point for measuring latitude. The latitude of the North Pole is 90° N, and that of the South Pole is 90° S. The latitude of every point in between must be some degree north or south, from 0° to 90°. One degree of latitude covers about 69 miles (111 kilometers). Longitude is measured in degrees east or west of the prime meridian. This means one half of the world is measured in degrees of east longitude up to 180°, and the other half in degrees of west longitude up to 180°.  View the video below to get a better understanding of latitudes and longitudes better.

Diagrams showing  Latitude and Longitude

            Think about answers to the following questions for discussion on Tuesday

• Which coordinate gives us information about east-west position - latitude or longitude?

• What is the name of the reference or zero line for latitude? For longitude?

• Latitude and longitude are the two coordinates that determine a specific point on the Earth's surface. How does knowing the location of a point help us make maps?