Powering Up for the Head Start on Science Program: Using Power Analysis to Plan the Sample Size Required for a Multi-Site Cluster Randomized Trial

Steven J. Pierce
Laurie A. Van Egeren
David Reyes-Gastelum
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This intermediate session demonstrated how we conducted an a priori power analysis for a longitudinal,
multisite cluster randomized trial of an early childhood science education program, then later revised it to
accommodate budget changes suggested by the funder without compromising the viability of the study. We
covered how the research questions, design, and analysis plan informed the power analysis approach; the software
we used; and what the input parameters required actually represent. Then we discussed how we used both pilot

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2011 DR K-12 Program Webinar

Julio Lopez-Ferrao
Ed Geary
Edith Gummer
Robert Reys
Elizabeth VanderPutten
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NSF and CADRE hosted a series of webinars providing an overview of the DR K-12 funding program and reviewing this year's DR K-12 solicitation. Here is a sample of some of the questions that came up during the webinars:

  1. Can you explain cost sharing?
  2. For a collaborative proposal, do we submit one or two Letters of Intent?
  3. What is the difference between STEM focus and STEM discipline?  Both are listed in the RFP.

View a recording of each session's presentation, here:

Urban Middle Grades Mathematics Curriculum Implementation

Karen D. King
Monica Mitchell
Candace Barriteau Phair
Jessica Tybursky
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Understanding the Fidelity of Implementation and Scalability of Mathematics Professional Development Curricula (Moeller, Seago, Borko)

Babette Moeller
Nanette Seago
Hilda Borko
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Understanding the Fidelity of Implementation and Scalability of Mathematics Professional Development Curricula
Babette Moeller and Lynn Goldsmith, Education Development Center, Inc.; Hilda Borko, Stanford University; Jennifer Jacobs, University of Colorado;Nanette Seago, WestEd

Three DR-K12 projects investigating the implementation of mathematics professional
development programs by district-based facilitators discuss with participants their approaches to
assessing fidelity and preliminary findings.

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