How much pee is in this 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 urine that chlorine doesn't disguise.

In this activity, students calculate volume of several pools, change that cubic foot volume to gallons of pool water, and try to approximate how much urine is in each pool.  You might kick this activity off with this silly clip from the 2010 movie Grown Ups, where Kevin James is caught peeing in the pool.

Where should I drop my puck

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Act 1 - Give students time to view the game board above or give them our one-page activity. The above picture is larger when you click on it. Ask students for their gut reaction about which slot would give them the best chance for earning points.

Some fun summer activities

Point of view - With any set of cubes, enjoy building this creation using our two view-point pictures. How many blocks are in my stack?  What is the least number of blocks that I used?  The most number of blocks that I used?

Wrapping presents on the diagonal - For a hands on learning experiment, wrap a small box using any available paper in both the traditional and diagonal methods. Then compare the two quantities of wrapping paper used and decide which method uses less paper.

Pascal Coloring and modular math - In this activity students have the opportunity to color as they investigate Pascal's triangle and the many useful patterns that it shows. The triangle is explored for patterns, coloring results, and motivation to learn more about modular arithmetic (clock math).

Pythagorean Triples and coloring - We've combined a little coloring with our Pythagorean Triple pattern investigation to let your family relax while they color, view the beauty, and recognize the progression.

Sunday, July 17th, is National Ice Cream Day

In this activity, we've created two small tasks to challenge your students.

  • If you know how much ice cream is eaten every year, how much is the "average" American eating?
  • And, what will it cost me to make my own ice cream at home? Is that a good deal?

Should I buy a gasoline, hybrid, or electric car

Should you buy a hybrid or an electric car to save money and the planet?

Students create equations for finding the break-even points of these vehicles by mileage and years of ownership.  They then work with systems of equations to find the number of years or number of miles where the cost of these cars are the same.


2022 Honda Insight
MPG: Up to 55 city / 49 highway
MSRP: From $25,760


2022 Honda Civic
MPG: Up to 33 city / 42 highway
MSRP: From $22,550


2022 Nissan Leaf
MSRPFrom $27,400
40 kWh lithium-ion battery

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