Flatworm (planarian)

Stroud Water Research Center and Unionville-Chadds Ford School District collaborated to create these hardware designs for 3D printed macroinvertebrates.

To learn more about the biology of these macroinvertebrates, visit [macroinvertebrates.org](https://www.macroinvertebrates.org).

To learn how to use macroinvertebrates to investigate stream health and participate in an international network of teachers, students, and citizen scientists investigating stream ecosystems, visit [leafpacknetwork.org](https://www.leafpacknetwork.org).

To learn about the multidisciplinary programs and educational resources at Stroud Water Research Center, visit [stroudcenter.org/education](https://stroudcenter.org/education).

To learn about other macroinvertebrate products available from Stroud Water Research Center, visit [stroudcenter.org/shop](https://stroudcenter.org/shop).