Organize student work in Google Forms. Collaborate on Google docs. Blog with Blogger-class blog for current events. Google Moderator-generate class ideas. Templates
Have fun with Apps! I use this iPhine App with students. They make themselves into Neanderthals and the make a blabber at www.blabberize.com sharing a prompt of their choice.
Great for digital note booking. Students download lab sheets from iTunes U and open in notability. Can write, type, take pictures, add graph paper, record, etc.