Classroom Activity

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Algebra 2

Key Topics: Power functions with negative exponents

The Lighting Environment Test Facility, or LETF, at NASA Johnson Space Center in Houston, Texas, investigates and evaluates proposed lighting systems for use on space vehicles. Lighting systems enhance the crew’s direct and indirect viewing ability during spaceflight. Students will perform a hands-on activity to explore the inverse relationship of illumination to distance. Students will then go on to calculate the number of lights needed in a module on the International Space Station.

Students will
  • analyze data from a simulation;
  • model data from a simulation using a graphical and algebraic approach; and
  • apply the measure of illumination, lux  =  Candela / m2 , to various situations.


Note: This particular activity requires the use of TI-Nspire™ technology to be used successfully.

Files for use with the TI-Nspire™
› Lights on the ISS TI_Nspire Educator Edition (PDF 682 KB)
› Lights on the ISS TI_Nspire Student Edition (PDF 428 KB)
Note: The following file is a software specific file for Texas Instrument Nspire calculators.
› Lights on the ISS TI_Nspire Document (TNS 134 KB)
› Lights on the ISS TI_Nspire Solution Document (TNS 134 KB)