https://www.tes.com/teaching-resource/adding-and-subtracting-fractions-with-unlike-denominators-scavenger-hunt-11729586
This scavenger hunt has students practicing adding and subtracting fractions with unlike denominators. All answers are in fraction form. Students can start at...
scavenger huntaddingsubtractingfractionsteaching
https://smathsmarts.com/top-5-things-to-consider-when-teaching-3rd-grade-students-about-adding-or-subtracting-with-place-value-understanding/
topthingsconsiderteachinggrade
https://archive.org/details/dkmmfma2
ISO Image of the 1997 game DK My First Math Adventure - Adding and Subtracting, if this violates copyright in anyway, then i'll take it down.
my firstdkmathadventureadding