[Surfnetkids: 24 Feb 2010] Ratio and Proportion

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#1. February 24, 2010

Barbara J. Feldman
Dear Reader,

As I notice Black History topics rising in popularity over at Surfnetkids.com, it serves as a gentle reminder that perhaps an overview of what’s available would be appropriate. So, here goes.

Black History Month
http://www.surfnetkids.com/blackhistory.htm

Black History Month Quizzes
http://www.surfnetkids.com/games/black_history_month_quiz.htm
http://www.surfnetkids.com/games/blackhistory-quiz.htm

Martin Luther King, Jr.
http://www.surfnetkids.com/king.htm

Martin Luther King Coloring Pages
http://www.surfnetkids.com/coloring/holiday/martin_luther_king_day/

Martin Luther King Quizzes
http://www.surfnetkids.com/games/king-sw.htm
http://www.surfnetkids.com/games/martin_luther_king_quiz.htm

Martin Luther King Crossword
http://www.surfnetkids.com/games/king-cw.htm

Rosa Parks
http://www.surfnetkids.com/rosa_parks.htm

Rosa Parks Word Search
http://www.surfnetkids.com/games/rosa_parks-ws.htm

Rosa Parks Quiz
http://www.surfnetkids.com/games/rosa_parks_quiz.htm

Tuskagee Airmen
http://www.surfnetkids.com/tuskegeeairmen.htm

Tuskagee Airman Word Search
http://www.surfnetkids.com/games/tuskegeeairmen-ws.htm

Sojourner Truth
http://www.surfnetkids.com/sojourner_truth.htm

Booker T. Washington
http://www.surfnetkids.com/booker_t_washington.htm

Booker T. Washington Quiz
http://www.surfnetkids.com/games/booker_t_washington_quiz.htm

Little Rock Nine
http://www.surfnetkids.com/little_rock_nine.htm

Little Rock Nine Quiz
http://www.surfnetkids.com/games/little_rock_nine_quiz.htm

Emancipation Proclamation
http://www.surfnetkids.com/emancipation_proclamation.htm

And last, but not least, seven pages of Black History sites recommended by readers like you, over at SharingLinks.com
http://www.sharinglinks.com/search/all/black%20history

See ya on the Net,
Barbara J. Feldman
"Surfing the Net with Kids"
http://www.surfnetkids.com

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#3. Ratio and Proportion

by Barbara J. Feldman
http://www.surfnetkids.com/ratio_and_proportion.htm

Ratio and Proportion Printable (** for premium members only)
http://www.surfnetkids.com/printables/ratio_and_proportion.pdf

A ratio is the mathematic relationship between two numbers, where one is divided by the other. A proportion is an equation where two ratios are equal. A typical use might be something like this. The ratio of boys to girls on the bus is five to four. If the teacher counts fifteen boys, how many girls are on the bus?

Algebra Help: Proportion Basics
*****
Algebra Help’s four-page introduction to proportion, means and extremes concludes with a twenty-question worksheet that includes both a manual answer sheet and a step-by-step solution to each problem. “The four parts of the proportion are separated into two groups, the means and the extremes, based on their arrangement in the proportion. Reading from left-to-right and top-to-bottom, the extremes are the very first number, and the very last number.”

Math.com: Ratios and Proportions
*****
“In a horror movie featuring a giant beetle, the beetle appeared to be 50 feet long. However, a model was used for the beetle that was really only 20 inches long. A 30-inch tall model building was also used in the movie. How tall did the building seem in the movie?” Math.com’s lesson is divided into four steps: First Glance, In Depth, Examples and Workout. The Workout consists of a ten problems with automatic grading. Unfortunately “Check Your Answer” does not work in Firefox 3.5 but does in Internet Explorer 8.

Purple Math: Ratios
*****
This seven-page lesson from Purple Math has lots of word problems where the work is shown, and the answer explained. “Conversion factors are simplified ratios, so they might be covered around the same time that you’re studying ratios and proportions. For instance, suppose you are asked how many feet long an American football field is. You know that its length is 100 yards. You would then use the relationship of 3 feet to 1 yard, and multiply by 3 to get 300 feet.”

… Click to continue Ratio and Proportion .

#4. Printables Club Members Also Get …

Surfnetkids Printables Club Members also get the following printables to use in the classroom, the computer lab, the school library, or to send home with students:
Ratio and Proportion Printable
Fractions Printable
Fibonacci Numbers Printable
Math Puzzles Printable
*** Are you curious? Get your own ten-day trial membership:
http://www.surfnetkids.com/printables-club.htm

#5. Related Games

Math Games
http://www.surfnetkids.com/games/Math_Games/

#6.Surfing the Calendar

Wilhelm Grimm’s Birthday (one of the Grimm Brothers)
Feb 24, 1786

George Harrison’s Birthday
Feb 25, 1943

First U.S. Chartered Passenger Railroad Service
Feb 28, 1827

Jim Watson and Francis Crick Discover the DNA Double Helix
Feb 28, 1953

Irish American Heritage Month
March

National Craft Month
March

National Nutrition Month
March

Music in Our Schools Month
March

Women’s History Month
March

National Cheerleading Safety Month
March

#7.Quote of the Week

A liar will not be believed, even when he speaks the truth. ~~ Aesop ~~ (550 BCE) ancient Greek philosopher, fable author .Click here for more truth quotes.

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