Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Diagram of jigsaw activity. First, students meet in their home groups to develop a model based on their existing knowledge (step 1). Then they break out into “expert” groups in which they study and discuss a research article, each expert group analyzing a different article or subset of articles (step 2). Finally, students return to their home groups to revise their initial model after reporting, discussing, and synthesizing their new knowledge (step 3).
