AIMS Materials: Center
Introduction to the Lessons
There are two lessons on reasoning about measures of center. They begin with the physical activity described earlier where students manipulate Post-It® notes on a number line to develop an understanding of mean, and then median. Students use a Fathom demo to contrast how the mean and median behave for different types of data sets. Students make and test conjectures about typical values, testing these using software to generate graphs and statistics. The last activity has students compare features and uses of different measures of center when summarizing sample data.
The AIMS materials for the topic of center include several different zipped folders. Each folder contains the relevant materials for this topic. There is also a PDF file of the topic's sequence of ideas and associated activities. All materials can be accessed by selecting the icon to the right of the file description.