Illinois Secretary of State's Bike Safety Tips booklet.
The National Traffic Safety Administration has instructional, nine-minute bicycle safety videos for elementary and middle school age audiences on how to Bike Safe. Bike Smart.
Ride Illinois has a Kids & Biking Resource page with several great safety links. They also have an Illinois Bike Safety Quiz Challenge! NEW IN 2021--Ride Illinois now has a calendar of bike education classes and resources accessible to adults and children across Illinois. Educational content and classes are tailored to different age groups through a variety of methods – online (live), on-demand, and in-person classes. Visit https://rideillinois.org/safety/education/
Safe Kids World Wide's Bike Safety Tips page at https://www.safekids.org/tip/bike-safety-tips