Board Thread:Questions and Answers/@comment-99.164.4.58-20130406020916/@comment-5075764-20130410094449

That was probably a fault of the writers. They included all the weapons (and didn't bother to check they were all Japanese), all for a comedy scene.

As for why Splinter would show her all of them, despite some being obviously inappropriate for her, he probably did so because it was April's choice. The whole point of choosing your own weapon, is first you have to see all the weapons available to you. It was April's choice which weapon she should have, so Splinter had to show them all to her, and she'd choose. Even if the weapon she chose was a stupid one, like the chigiriki, it was still her choice.