Child pictured from the waist down walking along decals of coyote footprints on the Magazine Beach MathTrail


The Charles River Conservancy, in partnership with MathTalk, a Cambridge-based organization, is excited to bring a network of bilingual educational installations, called “hotspots,” that introduce early intervention math concepts to the Charles River parks. Hotspots connect youth to their environment through free math play in both English and Spanish, and encourage visitors of all ages to interact with their local parks in meaningful ways. 

Visit Magazine Beach and explore our first partnership hotspot on the Magazine Beach Footbridge. The transformative project, co-designed by a team of community members from Cambridgeport, CRC staff, and local elementary students, turns stories, public art, and augmented reality into experiences that inspire children and adults to explore math literacy together at Magazine Beach. Walk the bridge, interact with the Gigantic Number Line and animal counting footprints, and access a free learning app, Measure! Everything! 

During the winter season, use Measure! Everything! to measure the height of snow and ice forming at the edge of the Charles River! Share your measurements all year round with the CRC and MathTalk on Instagram: @charlesrivercrc @mathtalkpbc

For more information about MathTalk initiatives, check out


The Gigantic Number Line is located on the Magazine Beach Footbridge at 719 Memorial Drive in Cambridge, just upriver of the Boston University Bridge.


The Charles River Conservancy is working to bring a network of hotspots to the Charles River parks with MathTalk. The Gigantic Number Line on the Magazine Beach Footbridge brings a natural educational resource to the area, encourages safe travel over Memorial Drive to and from the Charles River Reservation, and boosts learning opportunities outdoors. We are grateful to the community of designers, teachers, parents, and children who are instrumental in developing this work. In the next phase of planning, we will explore the possibility of new hotspots with the communities of Allston and Northpoint, as well as re-install and maintain the current installation at Magazine Beach. 

As hotspots come to life, stay tuned for walkable and bikeable MathTrails that connect hotspot locations.


Measure! Everything! is a free app developed by MathTalk that accommodates both English and Spanish speakers. Using augmented reality (AR) experiences, the app enables young children to learn math with hands-on games and activities! You can bring 3D animals or objects to life wherever you are with this app, all while learning about basic math concepts. How many caterpillars tall are you?

App photos and graphics provided by MathTalk


Check out an activity sheet the Charles River Conservancy and MathTalk have developed that can be used at Magazine Beach! The sheet incorporates both math concepts from MathTalk’s app Measure! Everything! and observation skills essential for a naturalist.


Thank you to our supporters who have made the MathTalk installation possible with generous donations. We express gratitude to all.

  • Frances R. Dewing Foundation
  • Reach Out for Schools
  • MathWorks

We are grateful to our early donors who made the MathTalk installation at Magazine Beach possible! For this on-going project and partnership, continued support for installation of additional hotspots, material research, and community feedback and engagement will help make certain that the CRC and MathTalk continue to provide positive learning experiences for our youth and their families in the Charles River parks. Interested in supporting the continuing impact of this project? Contact Laura Jasinski at


We are grateful to our partners who made the MathTalk installation on the Magazine Beach Footbridge possible with generous support from permitting to design through installation.

  • Morse Elementary School
  • Magazine Beach Partners
  • Cambridge Arts Commission
  • Sidewalk Math
  • City of Cambridge Department of Public Works
  • MassDCR

We are grateful to our partners who made the MathTalk installation on the Magazine Beach Footbridge possible with generous support from permitting to design through installation.


  1. Partnering with MathTalk and others, design and implement an educational installation to connect youth and families to the Charles River and parks in fun and meaningful ways.
  2. Create opportunities to extend the classroom outdoors for K-5 learners and their families.
  3. Engage the local community in advocating for outdoor learning opportunities in connection with the Charles River and adjacent parks.

Have a question or want to learn more? Contact Taylor Leonard at