This applet uses the rule of signs to multiply two integers

Use the applet to multiply integer numbers between -5 and 5
Create 5 multiplication problems and record them with their answers on your answer sheet.
What happens when a positive number is multiplied by a negative number?
What happens when a positive number is multiplied by a positive number? Have you seen this before?
What happens when a negative number is multiplied by a negative number?
What happens when a negative number is multiplied by a positive number?
Try more problems. Do the observations you made previously always hold true?