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Ratio and Proportion

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Growth of Facebook update

Algebra Number Sense Ratio and Proportion Data and probability

Facebook is so accepted in our world today that it is even part of nightly news broadcasts as people are noted for receiving huge numbers of likes in appreciation or interest. Mark Zuckerberg, the f...

California water measurements - chains, links, and furlongs

Algebra Geometry Math and Science Ratio and Proportion

[caption id="attachment_17570" align="aligncenter" width="263"] Gunter's chain[/caption] Help your students understand what they are reading or hearing about the California drought. Terms like acr...

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 w...

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 activi...

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...

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 ...

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