Emphasize the Fundamentals..with humor.
Show them, use fun visual, verbal and auditory cues, and practice.
Challenge them with big problems, and let them see how great they can be.
PEMDAS has never been effective! So I developed a method to teach "order of operations" without all the convoluted rules; without searching the entire expression for specifics. This new approach uses a simple, left to right sequence. Consistent, solid rules. Uses verbal, visual, and auditory cues for recall