Feel free to use any of my stuff with your students. It makes me happy that my stuff might help your kids.
Remember to tell them to use Bandmate Chromatic Tuner on their iPad, iPhone, or Chromebook to help them learn.
FYI, I have a few things on Teachers Pay Teachers that you might like.
Some of you have asked if you can financially contribute to this website, which is very kind of you. I do have to pay $$ every year to keep this stuff available online: the website, the app on the App Store, etc. Please feel no obligation to do so, but you can send a "tip": Paypal ... Venmo