Investigating Lactose Intolerance
Students are first introduced to lactose-intolerance and its cause. Next, they work in pairs to test whole milk and lactose-free milk for the presence of glucose. They find that glucose is present in lactose-free milk but is not present in whole milk. They then add lactase to the whole milk, retest it for glucose, and discover that it now contains glucose.
Details at a Glance
- 1-2 Days | 1-2 ~50 minute class periods
- 3 Activities
- Accommodates 1 class, with 16 groups of 2 students
- Consumables service 32 students
- Meets our criteria for supporting literacy
- Includes digital resources
- Requires a water source
Scientific Concepts
•Enzymes, such as lactase that breaks down lactose (into glucose and galactose), are essential to life processes.
•Lactose needs to be broken down in order to be digested by humans.
•Individuals who lack certain enzymes can experience uncomfortable and/or dangerous symptoms.
•Controls are essential components of the scientific process.
Key Vocabulary: Control, Enzyme, Glucose, Lactase, Lactose, Lactose intolerance
Guides & Student Sheets
Our kits and modules provide you with everything you need so you can open, review, and teach the material confidently the next day.
- Comprehensive Teacher Guide with background information, detailed instruction, example data and answers
- Student Sheets with age appropriate background information, full procedure(s), and analysis items
- Materials necessary for the investigation (beyond common classroom items)
- Safety Data Sheets
Kit Components
- 96 Glucose test strips
- 32 Tasting cup, paper
- 16 Spot plate, 4-cavity, clear
- 16 Droppers
- 4 Glucose Test Solution, 2%, bottle
- 4 Water, bottle (shipped empty)
- 4 Lactase Solution, 3%, bottle (shipped as powder)
- 1 SDS (Safety Data Sheet) packet
- Downloadable pdfs of student and teacher literature
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