I thought I would revisit this topic and post a couple of FREE resources.
Foundations: Inquiry is available as a FREE pdf from NSF and contains 13 chapters on inquiry based learning in science.
Inquiry and the National Science Education Standards is available to read FREE online. Chapter 3– Images of Inquiry in K-12 Classroom has vignettes of inquiry learning in classrooms.
Applications for Science Teachers: Any science teacher, teacher leader, or administrator interested in expanding their professional learning and understanding of inquiry may find these resources valuable. PD providers may find selections of these resources useful in a professional development setting.