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...
Data and Probability 5.MD 4th 5th 6th 7th 4.MD.C 7.G.B 6.G.A 6.RP.A 7.RP.A unit ratio ratios of volume Volume pee 8.G.C.9 7.EE.B summer