Debby Heerkens, a biology teacher at the Groene Hart Rijnwoude school in the Netherlands, came up with a truly memorable way to educate her students. She stood up on her desk and stripped off her clothes to reveal a full suit of spandex illustrated with accurate muscles and organs. Below that, another set of spandex illustrated where all the bones in her body are.

According to omroepwest.nl, Heerkens came up with the idea when she saw someone walking around with similar leggings. After finding them online, she kade sure that it was ok with the school’s director and then brought them in to class. Since the memorable class, students have been asking about when she’ll be having another similar lesson.

More info: Facebook | groenehartscholen.nl (h/t: omroepwest)

This is how Ms. Heerkens’ students learned about organs…

…skeletons…

…and muscles!

Watch this video of one of her classes: