negative / minus / con / assignment / grade
This sign typically means "minus" or "negative" or a bad feature.
But, it can also mean "assignment" or
The "grade" version is certainly using a "G" handshape. But the
distinction between an "index finger" handshape and a "G" handshape at this
angle is no big deal. The difference between "minus" and "grade" can be as
subtle (literally) as a quarter inch bend in the knuckle of the thumb.
Your best bet is to pay attention to the context in which this sign appears
(as well as the movement) and use the clues altogether to figure out what is
NEGATIVE / MINUS / CON / ASSIGNMENT / GRADE:
Also see: MINUS / subtract / take away
You can learn
American Sign Language (ASL) online at American Sign Language University ™
ASL resources by Lifeprint.com © Dr. William Vicars