tags: ratio

tags: ratio
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Green, green river

Algebra Number Sense Holidays and Annual Events Ratio and Proportion
During the St. Patrick's Day parade in Chicago, the local plumbers union dyes the Chicago River emerald green. Students learn what PPM (parts per million) means and  attempt to figure ...

HDTV Surprise!

Number Sense Geometry
  How were your holidays?  Your school vacation?  Mine was good. I surprised my family with this HDTV, which I wrapped and hung on our wall.  The size of an HDTV is determined by ...

California wildfire

Number Sense Geometry Math and Science
Wildfires are burning in the Sierra Nevada Mountains near Yosemite National Park.  In this activity we ask students to examine various maps of this California region, calculate distances us...

Bits, bytes, and nibbles

Algebra Number Sense Math and Science Ratio and Proportion
Clicking on the image will show it larger. I'm not very good at understanding how large my device capacities are and how big the files that I want to download are in comparison.  I decid...

Cruising

Algebra Number Sense Math and Science Math and Food Ratio and Proportion Data and probability
There have been a lot of cruise ship mishaps and disasters this year. While these are in the news, let your students consider how these floating cities manage their resources and which of their need...

Is this possible?

Algebra Number Sense Geometry Math and Food
Brian Shoemaker, a Newton, MA mathematics teacher, saw this Dunkin Donuts Mazda traveling down the road.   He wondered if that size coffee cup could really have coffee in it. &nbs...

Curiosity landed on Mars

Algebra Number Sense Math and Science
Keep your students up on what's happening in space while analyzing Curiosity the Mars Rover's speed, the speed of a radio transmission from Mars, and the deceleration involved in a "sky crane" lan...

Linsanity

Algebra Number Sense Sports Ratio and Proportion
Jeremy Lin is the New York Knicks most startling player.  His story is exciting in that he graduated from Harvard in 2010 and was not immediately drafted into the NBA.  At first he was...

The Euro and the international debt crisis

Algebra Number Sense Math and Social Studies Ratio and Proportion Data and probability
Lately the news is filled with talk of the Euro, US foreign debt, the fragility of European monetary systems, and the interdependence of all of these crisis. In this activity students become fami...

Happy Birthday Statue of Liberty

Number Sense Math and Social Studies
Friday is the Statue of Liberty's 125th birthday.  Student's can practice scaling with ratios, multiplication factors, or similar figures as they engage in the news of the day, learn a litt...
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