Hi Hunty! It was a few months ago but I checked my historic and I think it's when they do the summer review challenges, each time you participate you earn points and I guess after some challenges participation you get the badge but it doesn't say when I click on it. It sure will be back soon though... good luck with that :))!!

Hi !! I was curious on how you got all the summer review badges ?! Would love to add them to my collection haha! Thanks :))
  Smart