I'm so sorry this took so long. I've been so busy with my son that I ignored this site entirely. By particle manipulation, I mean he is able to change one object (I.e. an apple) into something of equal weight (I.e. an orange). Like he has a bed, but he doesn't want to sleep, he changes it to a small couch or a reclining chair. Basically, rearranging the particles to create a different thing.