Simplify the following text for a Grade 9 native English-speaking person.
Original: That is , that aikido practitioners who focus on aikido 's roots in traditional jujutsu or kenjutsu are diverging from what Ueshiba taught .
Simplified: Many of Ueshiba 's senior students have different approaches to aikido , depending on when they studied with him . Today aikido is found all over the world in a number of styles , with different groups placing importance on different things .