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.
Pre– and post–course concept inventory tests were used to assess student learning and retention of scientific content. This histogram plots data for pre–term‐1 (light grey), post–term‐1 (medium gray), and post–term‐2 (dark gray); numerical values and further details are presented in the text.
