Your students will love this scavenger hunt. Let them work individually or in pairs to find the problems around you room. The problems involve finding elapsed time, adding time intervals, subtracting time intervals, etc. I have my students use a time line or number line to solve the problems, but the record sheet is open ended to fit any other strategies you may have. TEKS 3.7C, Teks 4.8C, and CCSS 3.MD.A.1