Laura Commins is a sixth grade teacher in Indiana, and I love her four corners measurement activity. Typically this is done in a classroom, but it can easily be taken outside. You label 4 corners or areas with different measurements and give students cards labeled with a unit of measurement, measurement scenario, or a measurement tool. Then students can walk, run, skip, hop, or jump to the matching corner with the appropriate measurement. This can easily be adapted for other math topics as well!
We paired this activity with our article about the Mini Tough Mudder, a mile-long obstacle course for kids aged 5 through 12. Participants have to climb, jump, and crawl their way through eight obstacles four times each. The article spotlighted an 11-year-old named Michael Ashurst who completed a Mini Tough Mudder in New Jersey last fall.
Developing these obstacle courses requires a lot of measurement, and so our math skill incorporated choosing the appropriate measurement and tool to represent a given quantity. You could even challenge your students to work in small groups and design their own outdoor obstacles!