Time Period - Measuring time is an activity/assessment that includes a poster informing the students of the different ways that we measure time. DayYearDecade Score CenturyMillennium It also includes information on how often we group time periods together. Annual Biannual Semiannual Centennial There is a one past assessment where the students are asked to categorize the time measurements in order. *Answer key included*Clip art from: Creative Clips by Krista Walldenhttps://www.teacherspayteachers