The Context

• Tylertown Upper Elementary School, like many Project Assist schools, was overwhelmed with an influx of students displaced by Hurricane Katrina in 2005. Assessments of the new students revealed that they needed to catch up in mathematics.  To meet students’ academic and social needs, the school offered Mathematics Navigator during summer school.

The Study

• Tylertown students participating in summer school were identified as needing two Mathematics Navigator modules. America’s Choice viewed this as an opportunity to evaluate the effectiveness of the program with a rigorous, randomized study.

• Students were randomly assigned to one of two groups.

• All students received instruction in both modules during one of two instructional sessions.

• Group 1 received Module A and Group 2 received Module B during the first instructional session.

• At the end of the first instructional session, both groups were post-tested on both modules.

• For the second instructional session, Group 1 got Module B and Group 2 got Module A. Thus, by the end of the second instruc-tional session, both groups had received both modules.

• At the end of the second instructional session, both groups were post-tested on both modules.