Sound Z

This is the song for the sound Z:

Did you ever hear a bee buzz?

A bee buzz, a bee buzz, a bee buzz

Did you ever hear a bee buzz?

Z z z like this?

My smartboard´s work about the sound Z is this:

https://drive.google.com/open?id=0B4YLBJzOULYRVzV2R05JMnR3UGc

The sequence for the sound Z is:

https://drive.google.com/open?id=0B4YLBJzOULYRVno1TlNJUzJVX1U