Yeah, I guess they're just for reading... as opposed to Matsuri's, which have to be worn just so she can function in most situations.
I like where Chika gets Super Mario Kart advice mixed in with her geometry(?) homework, her reaction to Miu's quip, and her telling the reading "...and that's how it all happened." "You say something?" :D
One thing, though... what's "So... so wonderful!" about the last panel? Does it make more sense in a different translation?