Students use balls and disks to prove the general formulas for sums of squares and cubes.

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Contributor Notes

Tongta Somchaipeng,, is a doctoral student in STEM education at the Institute for Innovative Learning, Mahidol University, in Bangkok, Thailand.

Tussatrin Kruatong,, teaches physics at the Institute.

Bhinyo Panijpan,, a biophysicist by training, is fascinated by symmetry and pattern in nature and mathematics. All are interested in hands-on science and mathematics activities and professional development.

(Corresponding author is Somchaipeng
(Corresponding author is Kruatong
(Corresponding author is Panijpan
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