How can I use these materials?

You can print, copy, and distribute to your students individually or as a collection. You can also make overhead copies or display on an LCD projector or opaque projector.  You can even imbed these materials in your own materials, provided the materials are not published for profit.  

Is there a cost?

No.  These materials are free for any non-profit use.

Can private schools or home schools use these materials?

Yes, you can use them just like any public school would use them.