What's the Missing Step? 
Activity Type: Small Group
Mental Number Line to 10
Children identify the missing step in a growing and shrinking staircase tower. (Adapted from: Clements & Sarama, 2014)
Special Thanks To
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.