The League of SI Superheroes is back!
Working from their not-terribly-secret HQ at the National Institute of Standards and Technology (NIST), the cartoon heroes of the metric system use their awesome powers of measurement to fight uncertainty, imprecision and inaccuracy and to improve our daily lives.
In their newest adventure, Running Out of Time!, the League encounters an old foe, Major Uncertainty, who is meddling with the atomic clocks that are responsible for the accuracy of the Global Positioning System.
Will the League foil the evil alien? Will the GPS system be fixed in time? Will a lost father and son find their way to the Grand Canyon?
Watch and find out!
The new League adventure highlights the importance of precision time-keeping to the widely used Global Positioning System. The GPS uses a constellation of at least 24 satellites. Highly accurate atomic clocks on the satellites enable them to provide precise geographic position data to people with a GPS receiver—generally to within a few meters.
First introduced in Desperate Measures (2014), the League of SI Superheroes encourages students to learn about metric measurements as they consider science, technology, engineering and mathematics (STEM) careers. SI familiarity and fluency must be developed along the STEM career pipeline to prepare future workers with essential measurement skills.
Modeled on the seven base units of the International System of Units, or SI, the League of SI Superheroes are:
Catch up on their adventures at www.nist.gov/kids. Teachers can also request a classroom set of SI educational materials by submitting their contact information and grade level to TheSI [at] nist.gov.