Legit sources?

Ok. So, the question is whether or not it is a teacher's job to teach kids what sources have proper ethos/credibility.
I think it is our job to do that. We're teachers. If we're going to make them do research we should teach the proper way to do so. To teach them what is credible and not I would show them examples and make restrictions.
I would show the kids Ebscohost which has credible journals on it. I would also show them .gov and .org sites, which are always credible.
The kids need to look at a site and ask, "who wrote it?" "Does it have a bias?" "Can it be edited?" "What connection to the topic does the author have?" Ex: they have a PHD in veterinary medicine.
http://www.usa.gov/
is a good site because the GOVERNMENT made it and they are experts on the government. lol
http://www.ushistory.org/
This is a good site because it was made by an association that specializes in history.

Silence is Golden?

According to the article here: http://www.childrensmusicworkshop.com/advocacy/academicsuccess.html students really do succeed better when the use music. In order to better enhance my class I would use music to help the kids remember things. There are many songs out there that can help kids learn. Such as the video that sings the capitals of the States. http://www.youtube.com/watch?v=MSvJ9SN8THE&feature=related If a kid memorized that song they would know all of the state capitals. This has also been used to help learn about factoring in the famous, 'Teach me how to factor' http://www.youtube.com/watch?v=OFSrINhfNsQ   
I personally would go for a good mix of what my students like and what I like. I would let them vote one what music we listen too. All would be provided by me so the kids do not fight. "Today you can choose from Disney or rap..." During tests I would play instrumental pieces only. Music would only be played when I am not teaching, so when kids are working on stuff alone or in groups they would get to listen to it.
I think the music will increase motivation and thus increase test scores, but if the kids get too distracted I would take the music away. ;)
In order to match up to my content I would play for them the "Capitals" song and one about the elements to help them learn those things.http://www.youtube.com/watch?v=GFIvXVMbII0 Songs help with memorization, so when ever I need something memorized I would look for music out there or create my own. Or even better for the countries of the world :http://www.youtube.com/watch?v=3S13Z7NMfcA&feature=related
Even Daniel Radcliffe knows the element song...sorta... lol http://www.youtube.com/watch?v=rSAaiYKF0cs&feature=related