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Grade Vs Difficulty:

In the Playing with Parity Circle, students learn about parity through playing games and learning magic tricks. The Circle is an opportunity for students to play with and explore parity – to deepen their understanding of what it means for a number to be even or to be odd, and to draw connections between the games and the games’ various uses of parity as a mathematical tool and concept.
This lesson was developed by:
Emily McCullough, Julia Brodsky, Maria Droujkova, and Ashley Ahlin
Further discussion of the lesson may be found at:
http://www.mathcircles.org/content/playingparity
The heart of this lesson is the list of problems available at:
https://www.mathcircles.org/files/ParityProblems_0.pdf
This a video of Emily, Julia and Ashley running this session:
compare
Compare this with the parity problems for 4th and 5th graders
at https://www.mathcircles.org/content/parity4thand5thgraders