I am fairly rationale when I am in my classroom but have you ever put scissors in the hands of a child who has never used them. It is a true leap of faith. I have seen children handle them in the most unusual and "creative"
way. .We need to give young children many opportunities to use scissors (under supervision) to build their fine motor control so every year I take a deep breath, model the activity carefully, and walk around assisting children who are unsure of themselves. Keep your eye on the four year olds since you will not enjoy sending anyone home with a new haircut or shredded clothes. This is a hard skill for our little ones and they need lots of opportunities to practice this skill. Practice, practice, practice. This is just one activity I provide but at the beginning- KISS (keep it super simple).