About Us

Children follow natural developmental progressions in learning. Curriculum research has revealed sequences of activities that are effective in guiding children through these levels of thinking. These developmental paths are the basis for learning trajectories. 

Click on What are Learning Trajectories to learn more!

The Marisco Institute is dedicated to research and social policy in improving learning environments and outcomes for children, birth to age 8. 

Learn more about our work and the work of our Co-Directors - Drs. Doug Clements and Julie Sarama!


We provide research and evaluation services for both large and small scale programs, as well as professional development aligned to our research.

Our research, including selected publications and funded projects, are summarized here.

Click on Our Projects to learn more!

We work in collaboration with others across the University of Denver who are interested in early childhood research and policy.


Click on Our Collaborators to learn more!

Learning and Teaching with Learning Trajectories [LT]2 is a creation of Drs. Julie Sarama and Douglas H. Clements, funded by the Heising-Simons Foundation and the Bill & Melinda Gates Foundation [© all rights reserved].

Click on Our Supporters to learn more!

This free resource provides research-based educational activities and information for the professional development of early math teachers. Your donation empowers our mission to bridge research and educational practice.

Check out this interview with Doug Clements on the Making Math Moments That Matter Podcast.

Special Thanks To

Institute of Education Sciences
The research reported here was supported by the Institute of Education Sciences, U.S. Department of Education, through grant numbers R305K050157, R305A120813, R305A110188, and R305A150243. to the University of Denver. The opinions expressed are those of the authors and do not represent views of the Institute or the U.S. Department of Education.