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Grade 9-College. Blood spatter is found at a cabin crime scene. Your students must determine how the splatter formed. Students learn the techniques for blood-spatter pattern analysis. Students drop synthetic blood, from different heights and angles, onto paper, then measure the size and shape of those drops. Then they use a spreadsheet program to analyze data and build a mathematical model. They apply the mathematical model to blood-spatter patternssimulated with a cardboard modelin the cabin.