Principal Investigator: Marlene Kliman

Funders: National Science Digital Library (NSDL)


Mixing in Math (MiM) developed a set of over 130 digital materials for inclusion in the SMILE Pathway database—an online collection of free activities useful for integrating math and science into elementary children’s routines in school and beyond.

The SMILE (Science and Math Informal Learning Educators) pathway of the National Science Digital Library (NSDL) is a national partnership among science and technology centers, museums, community-based organizations, and out-of-school educators dedicated to making science, technology, engineering, and math (STEM) exciting and engaging for all learners.

Visit the SMILE database at:

Visit the Mixing in Math website at: