Analyze--Student McStudentson made the number line to model the expression -5+(-2)+3
He says, "According to my number line, the sum of these three numbers is 1."
a) Is he correct or incorrect? Explain how you know using mathematical evidence. If he is incorrect, find the actual sum of the three numbers.
You may also draw on the number line to show how you would model instead.
"Student McStudentson is (correct / incorrect) because..."
#1: Accurately models and labels on the number line
#2: Writes an accurate addition equation