Children's Music Workshop is a resource site for parents to help reinforce proper practices for beginning instrument players. It provides tips for putting the horn together and tips on how to help children progress on their instruments.
This website is great for beginning musicians. It provides instructional videos for the flute, clarinet, saxophone, trumpet, violin and cello. It provides suggestions for the parents of these beginning musicians. It is a great tool for music advocacy.
MusicTech is music technology (music production) website that shows and details all new and reviewed music technologies. Besides articles and reviews, there is a great Tutorials page that includes DAW how-to and interviews.
Noteflight is another web-based software for music notation. It is user friendly, and there are several tutorial videos out there to help anyone needed to know how to use it. You can embed and share your compositions, and also export them as files. It is like Finale, but has a lot less options, which makes it easier and less overwhelming for use in the classroom