MathLeague

Math Tutorials are an easy way to learn...
https://www.youtube.com/@mathleaguemedia
https://www.youtube.com/playlist?list=PLF579ECF317F5DC48
https://www.youtube.com/watch?v=7MUFt9vBmFY&t=14s&list=PLF579ECF317F5DC48&index=87
Circles (Khan Academy!)
https://www.khanacademy.org/math/basic-geo/basic-geo-area-and-perimeter/area-circumference-circle/v/circles-radius-diameter-and-circumference
Math Tricks Compilation:
https://www.youtube.com/watch?v=D-RRzc5oXuU
 
100+ pages or Number Sense Tricks
Mental Math Tricks
Math Ninja
2020 Nationals 5th place
2020 National Championship 5th place Olinda Team
2018
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2018 Champions