Bang for your Buck

In the classroom we do a weekly Choice and Voice. It's essentially a Show and Tell time for the kids to bring something in that they want to share with the class. It can be whatever they want. Today, one of our students brought in some sort of alphabet game/machine and a 1 dollar bill. She said that her dad gave her the dollar bill for learning her whole alphabet. This student exudes confidence around the classroom, and just by speaking to her you would think she knows her whole alphabet, what the letters look like, and possibly even sounds. She would even tell you she knows it all. Mr. P. tested her by asking her what some of the letters were.

Mr. P.: (pointing at a letter) Can you tell me what this one is?
Student: Ummmmmmm. I forgot that one.
Mr.P.: What about this one?
Student: Ummmm. I don't know
Mr. P.: This one?
Student: Ummmmm. I think I need to ask a friend for help.

Obviously that wasn't a dollar well spent.