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Ratio and Proportion

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We found 58 post available for you

How much should you spend on this sale?
Algebra Number Sense Ratio and Proportion 3-act tasks Data and probability
This activity can be used in a large range of grade levels.  Your class can work on percents, linear equations or piecewise functions. Act One: We missed the semi-annual sale but we want to get ready...

Cost of light bulbs - updated!
Algebra Number Sense Math and Science Math and Social Studies Ratio and Proportion Data and probability
There's a lot of misinformation out there about the cost to consumers of CFL and LED bulbs and the savings in energy and money that could be realized. Let your students "do the math" and realiz...

Raising the bar
Algebra Number Sense Math and Science Ratio and Proportion
Recovery of the treasure from the 1941 sinking of the S.S. Gairsoppa was recently completed and a huge amount of silver was brought up from the ocean floor.  Let your students get a fe...

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...

Starbucks sales (Updated!)
Number Sense Math and Food Ratio and Proportion Data and probability
Time to give students some authentic math on a topic they will surely be interested in ... Starbucks!  We ask and answer a few questions in this activity. About h...

The tallest structure made of Legos
Number Sense Math and Social Studies Math and Art Ratio and Proportion 3-act tasks Data and probability
Act One: The world record for the tallest structure made of Legos was set in Seoul, South Korea.  Check out this video on youtube! What other questions do you have? Act T...

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...

Launch of the next ISS crew
Number Sense Math and Science Ratio and Proportion Data and probability
If all goes well, the next crew of the International Space Station (the ISS) will launch on Sunday, Novemeber 13, 2011 from the  Baikonur Cosmodrome in Kazakhstan. Keep your student ...
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