Introduction: Classroom Number Ease Issues
Alphabetize your students and create clear lists to post around the room (near the computer cart, bookshelf, etc).
Step 1: Number Supplies
Number textbooks and computers clearly.
Tell students to take their number (remember, student numbers are clearly posted, so there's no excuse).
Students are more likely to take care of supplies and technology when it is "theirs". You'll know who to talk to when a number isn't put back properly or when someone damages property.