http://www.bls.gov/tus
The American Time Use Survey (ATUS) provides statistics and graphical data on the amount of time Americans spend on various activities: watching TV, eating, and working in the yard. Use the ATUS tables or charts to find statistics by either demographic characteristic (older Americans or students, for example) or area of activity (such as work, leisure, or sleep). If existing tables and charts are not sufficient, microdata files from 2003–8 can be freely downloaded for additional analysis. Supporting documentation explains how the government uses the data.
Imagine how you could use ATUS in math, social studies, consumer and family science, and guidance.