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Ratio and Proportion

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Algebra 389
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Ratio and Proportion 283
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California water measurements - chains, links, and furlongs
Algebra Geometry Math and Science Ratio and Proportion
 Help your students understand what they are reading or hearing about the California drought.  Terms like acre-feet, chains, and furlongs are often used to describe the volume of the reservo...

Chili Con Queso
Number Sense Math and Food Ratio and Proportion 3-act tasks Data and probability Wow factor
Act 1: Take a look at the promo at Moe's. What is the first question that comes to mind? How much does a 42-gallon jug of Chili Con Queso cost?  How many cups or bowls of Chili Co...

Which Sweet Hearts are the Best Deal?
Algebra Number Sense Math and Food Holidays and Annual Events Ratio and Proportion
  I have been doing a little shopping for Sweet Heart Candies. I came across these three deals online.  Which should I select? In this activity, students determine which package of...

How much does a Lego cost?
Algebra Number Sense Ratio and Proportion 3-act tasks Data and probability
 This is a three act task, with an activity guide.  Show students the act one video.  What questions do they have?  How much could the Star Wars kit cost?  Follow the activity...

Cost of light bulbs

Algebra Number Sense Math and Science Math and Social Studies Ratio and Proportion Data and probability
 This activity has been updated (2026). See the new activity here:https://www.yummymath.com/post/light-bulb-cost-comparison/ There's a lot of misinformation out there about the cost to consu...

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 ...

Nobel prize in physics 2013
Algebra Number Sense Math and Science Ratio and Proportion
François Englert and Peter W. Higgs François Englert and Peter W. Higgs were jointly awarded the Nobel Prize in Physics 2013 for the theory of how particles acquire mass. In 1964, they...

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...

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...
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