Timelines, Time zones, Positive and Negative Numbers, Estimation Strategies, The Four Operations

This is an escape room challenge, you need to work your way through the different phases to solve the challenge. If you get a question wrong you will need to go back and revisit the information and attempt the question again.

While at lunch you and your friends are walking around and end up in a section of the school have never been in before. At the end of the hallway is a large metal door. You twist the handle and the door opens.  You walk into some kind of storage room. As you start to look around, the door slams shut behind you. You turn to open the door, but it is locked. Upon further investigation, you realize it is not a storage room, but some kind of mad scientist lab. You need to go back and let your teacher know what is going on in the school, but the door requires a password to unlock it. You shuffle some papers on a table and see a paper labeled "Door Code" with some numbers and images on it. This must be your clue to freedom. Lunch ends in 10 minutes and whoever uses this lab will return. You don't want to be here when he or she gets back!