Student Project . . Make a Planetary Exploration Balloon Jet Propulsion Laboratory https://www.jpl.nasa.gov/ Last Updated: Sept. 30, 2024 Want to teach this? View the Lesson Plan Subject Science Time Required 30 - 60 mins Grade Levels 3-12 Want to teach this? View the Lesson Plan Standards . Math Standards (CCSS - Math) . Compute unit rates associated with ratios of fractions, including ratios of lengths, areas and other quantities measured in like or different units. Science Standards (NGSS) .