This is a wonderful Powerpoint presentation that outlines the differences between formative and summative assessments. It would be great to review this before school starts in the fall to get a handle on how to go about creating assessments.
What does assessment look like? This book from the Association for Supervision and Curriculum Development has gathered all the details of what teachers need to know about different assessments. While not science-specific, that which is discussed in this book will be useful.
This first-person video narrative comes from Professor Bacon, who is discussing a publication he found about formative assessment in science. While the video is just him speaking, he does offer some interesting points. It it worth the time needed to watch it.
As it relates to science, teachers need to formulate appropriate types of assessment to be sure students are asked the correct types of questions. This article sheds light on how science, inquiry, and assessment are related to each other. A great resource for the science teacher!