What Are These For?

Ben and I also took Dexter to karate on Wednesday (good thing he had so much to eat - plenty of energy!). We were a little bit early and Dexter discovered some weapons left on the floor by the prior class of older students.  He came up to his instructor, waving them around, saying, "What are these for?" I'm wondering if karate is the right thing for him...I had no idea weapons would be involved!