Blandford Nature Center http://blandfordnaturecenter.org
Calvin College Bunker Interpretive Center https://calvin.edu/directory/places/bunker-interpretive-center
Calvin College Ecosystem Preserve https://calvin.edu/ecosystem-preserve/index.html
City of Grand Rapids Parks and Recreation http://grcity.us/parks/Pages/parks-recreation-forestry.aspx
Edutopia “Finding the Beauty Outside of Math Class” https://www.edutopia.org/article/finding-beauty-math-outside-class
Grand Rapids Audubon Club www.graud.org | www.facebook/grandrapidsaudubonclub | www.instagram.com/grandrapidsaudubonclub
Howard Christensen Nature Center http://www.howardchristensen.org
MAA “Field Guide to Math on the National Mall” https://www.maa.org/field-guide-to-math-on-the-national-mall
NAACP-GR https://www.facebook.com/naacpGR/
Our Community’s Children http://www.ourcommunityschildren.com/ | http://ourcommunityschildren.com/occ-ppp/cities-connecting-children-nature
Wittenbach/Wege Agriscience & Environmental Education Center http://www.lowellschools.com/our-district/wittenbach-center/
