Build Math Confidence  February 2019 Volume 117
Math Confidence Events
Thursday Feb 7 Association of Math Teachers of New Jersey, Monroe, NJ
Tuesday March 5 Everyone Reading Conference, NYC
Saturday March 9 Ten County Math Cortlandt, NY
Friday March 22 Precalculus and More Rutgers, Piscataway, NJ
Survey: Calculators for Elementary Students?

 DeltaMath: A Great Way to Practice Math

Delta Math was created by NYC Math teacher Zach Korzyk to help his students practice skills without copying from each other.  This free platform allows teachers to assign skills-based exercises that are unique for each student.  One of the conundrums that Math teachers face is homework -- if we assign it, students often copy from each other...if we do not assign any, they do not get any practice.  The next frontier is to build non scannable types of questions that the cell phone camera is unable to solve.  
Chalkbeat: DeltaMath the online tool helping students learn (but not cheat)
Math in the "News"

To get people's attention about Math, just add food!  This hit the Internet in January and became an instant hit.  It may seem like the 2 small pizzas is a better deal than the single pie (and they may be easier to share!) but the actual area in square inches is greater for the single 18" pizza. 
NPR: 74,476 Reasons You Should Always Get the Bigger Pizza
Omni Calculator Pizza Comparison
Pizza Ordering Math Hack on PureWow
Brain Puzzler 
A traffic light has a cycle through green, yellow, red, green, yellow, red, etc.
Red and green are each 30 seconds with a 3 second yellow inbetween. 
What is the probability that while Dora is watching during a random 3 second interval that the color changes?

Answer to January Brain Puzzler: 210 miles
Click here  for the solution to January's  Brain Puzzler
Thanks, Robin the Math Lady Schwartz        
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