Figure 3.
Subjects must focus on a particular letter they want to write. Left, mid boards: row/column speller. Right board: single character speller.
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.