Storm cleanup
This activity could be used as an introduction to trig ratios. Students figure out the approximate length of the huge branch that I have to fell for safety and firewood. After approximating ...
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It sure is cold out ... or is it?
Students ponder the relationship between place latitudes and average January temperatures while they try to discover a correlation. Is this a linear or near linear relationship? … averaging, mis...
Valentine's Cardioid
WojciechSwiderski at the Polish language Wikipedia
Happy Valentine's Day!
This PDF contains four ways students can draw cardioids for Valentine's Day.
There is no solu...
Fast Growing Plant
This activity/post is a little different than our usual posts. We look at a particular math concept and consider how to use context, models and CCSS math practices to increase stud...
Parabolic Pee
Mr. Mark's new little baby can make some amazingly tall streams.
Give your class a little chuckle as you introduce them to parabolic motion with this very short analysis of Mr. Mark's baby's...
Why Does it Stay in Orbit?
On Monday, the space shuttle Endeavor launched for the last time. The six astronauts on board docked this morning at the International Space Station to join the 6 astronauts and cosmonauts who l...
Census is complete and Apportionment begins (2010)
The 2010 U. S. Census is complete and state reapportionment is about to begin. The process of distributing the 435 Representatives appropriately to each state is a mathematically fascinating eve...
Rapunzel
Disney's animated movie, Tangled, came out in 2010. We've shown students some of the Brothers Grimm's original fairy tale along with giving them a glimpse at the physics involved in the animation of R...
Cholera in Haiti
On January 12th of 2010, there was a tremendous, 7.0 magnitude, earthquake in Haiti. Hundreds of thousands of people were killed or injured and a million people became homeless. Then on November 5th...
Chocolate Milk and Mixture
Image by FreepikChemistry experiments and algebra problems sometimes ask students to create percent mixtures or to change a mixture into a stronger or weaker solution by adding more of an...