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The object of this lab is to figure out what is in some sealed mystery boxes, without opening the boxes. In this lab, you will be using observations and inferences, and making claims backed up with evidence. As you work through the slideshow, record your observations and inferences, and your claims and evidence on the Document "Mystery Boxes 21-22".   Use the share arrow (box with the arrow) to open this document in Google Docs before you start. Your progress will be saved as you go if you open it this way. Make sure you indicate which box you are working on, each time! This lab/project is worth 6 points. You will turn in what you have at the end of class Friday.