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.
Percent change in math accuracy, only for problems that involve spatial thinking, by pre-test math accuracy, only for problems that involve spatial thinking (left), and change in Paper Folding accuracy (center), with regression lines. Percent change in math accuracy, only for problems that do not involve spatial thinking, by pre-test math accuracy, only for problems that do not involve spatial thinking (right), with regression lines
