Summer is one of my favorite times as a teacher! Like most teachers I like to take a little time away from school, but, once I've rested a bit, its my favorite time to do research as well. I encourage you to take time this summer to explore labs and activities that you think may work for your classroom, but just didn't have time to examine with your busy teaching schedule.
Inquiry is a fluid concept. There are some truly fabulous activities on Grand Valley State University's Target Inquiry (TI) website (www.gvsu.edu/targetinquiry). Yes, I am biased as I was part of the first TI cohort, but there are several labs now that were written later and they, too, are terrific.
Celebrate Earth Day, which is on Monday, April 22, 2013. Earth Day was first officially recognized on April 22, 1970. This year the theme is "Our Earth: Handle with Care." The topics this year include water, air, plants/soil, and recycling.
If you haven't seen them yet, check out the final release of the Next Generation Science Standards. There is helpful information at the site. My home state of Michigan is currently asking for public input in order to plan support for implementing NGSS.