If you liked the GA: Geijutsuka Art Design Class anime, the Anime-Planet community thinks you'd like:
Tsuchida has just started working at the Hanamaru Kindergaten, and, as the first and only male teacher at the school, he’s particularly nervous. Unfortunately his first day doesn’t go quite as smoothly as planned as not only does Tsuchida turn up late, but then a small girl named Anzu claims that he hit on her in front of all the parents! Though he manages to initially clear up the misunderstanding, at the beginning of his second day, Anzu proclaims that she will be his bride and that her mother, Tsuchida’s senior in high school, is supporting them all the way! Now as Tsuchida attempts to become the best teacher he can be, he must also try and quell the rumors that he is dating Anzu, and maybe win the heart of the beautiful and kind, yet ultimately clueless, Yamamoto-sensei…
There are a lot of slice-of-life/comedy shows out there, but I find Hamamaru Kindergarden and GA: Art Design Class to be rather good matches for each other. They have a similar energy, sense of humor, and way of characterizing their casts.
Enthusiastic editor-in-chief Hana, serious Aki and their friends love manga so much that they've decided to start up a brand new manga magazine! Together, the new editors must find mangaka to work with, schedule photo shoots and perfect their typesetting, amongst other things. Little did the girls know that running a manga magazine would be more difficult than they imagined, but with teamwork and a lot of perseverance, they'll definitely succeed!
Mangirl and GA have a similar style of comedy- silly and slightly spastic, as well as similar character types/interactions. Both are kind of about art (or the manga industry, which deals with art), and explore their topic with lots of humor as well as a slight educational leaning.
When the gothic-lolita Marika opened her eyes on the train one day, she found herself in a bizarre and whimsical town in an unknown world. Quickly meeting the famous scientist Galileo Galilei, Marika is introduced to science in a whole new way. The town, Galihabara, is home to a number of notable inventors and tinkerers including Newton, Edison, Marie Curie and even Leonardo da Vinci! However, these ordinary figures of history are anything but - from MCs to ramen shop owners, each scientist is definitely unique in their own way. Alongside her magical stuffed animal Pet, Marika and Galileo explore Galihabara, learning important lessons along the way!
Marie & Gali and GA each found a way to educate their audience in the silliest (and most unexpectedly entertaining) way possible. One doesn't expect to learn about art history or Archimedes' screw in an anime (or to actually enjoy it). Both are stylish and adorable.
Kajiwara Sora is a shy girl who loves to draw. She's a member of the art club at school, even though one of the other members scares her sometimes. She finds drawing things like flowers or fruit easy enough, but she puzzles over how to capture more fleeting moments, like the flapping of a bird's wings or a cat that won't sit still. There are things she can draw, and things she can't draw, and with the help of her friends in the art club, she's going to experience them all to the fullest.
If you enjoyed the focus on art and design in either Sketchbook ~Full Colors~ or GA, then you may want to consider checking the other series out. Both are slice of life, with added comedy, though the humour in GA tends to veer more on the wacky side.