Normal Distribution Using Empirical Rule, labeling mean and standard deviation and shading desired area! Concepts needed for this activity: Basic understanding of Normal Distribution1, 2, and 3 standard deviations above and below Empirical rule (68, 95, 99.7) OR knowledge of z-score to find percentages They start out basic, having the students label the mean and standard deviations on a Normal curve, then have the students shade a desired area and end with the students calculating a probability