tags: 4.MD.C

tags: 4.MD.C
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How much pee is in your pool (Updated)

Number Sense Geometry Science
 How much pee is in your pool? 🏊🏊After chlorination, it has been hard to measure the quantity of pollutants in pool water.  A Canadian chemist, Xing-Fang Li, has found a marker for...

Voyager on the edge

Algebra Number Sense Science Ratio and Proportion
The two Voyager space probes are in the news recently as they approach the edge of our solar system.  Scientist can tell that the Voyager's environments are changing.  They are receiving m...
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