Milk—How Sweet Is It?

Have you ever wondered why some people are lactose intolerant? Participants test simulated patients in a hands-on lab activity to find out! They learn about lactose intolerance by performing an experiment, analyzing data, and drawing conclusions. Once complete, individuals identify the causes of lactose intolerance and how it affects the human body.

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CCSS: Designed
NGSS: Designed
Additional Tags
Instructional Ideas
  • Have pupils work in small groups to complete the lab activity
  • Divide experimental tasks between student groups and compile class data
Classroom Considerations
  • Accompanies the short film The Making of the Fittest: Got Lactase? The Co-evolution of Genes and Culture
  • Expects scholars to have general knowledge about enzymes and their substrate specificity
  • Requires a variety of materials not normally found in the classroom; plan ahead
  • Provides answer key for teachers
  • Gives suggestions for a variety of ways to use the activity
  • None
Common Core