The research goal of this project is to evaluate whether an early childhood science education program, Head Start on Science, implemented in low-income preschool settings (Head Start) produces measurable impacts for children, teachers, and parents. The study is being conducted in eight Head Start programs in Michigan, involving 72 classrooms, 144 teachers, and 576 students and their parents. Partners include Michigan State University, Grand Valley State University, and the 8 Head Start programs. Southwest Counseling Solutions is the external evaluator.

The study is determining the efficacy of the Head Start on Science curriculum in two models, one in which 72 teachers participate in professional development activities (the intervention), and another in which 72 teachers receive the curriculum and teachers' guide but no professional development (the control). The teacher study is a multi-site cluster randomized trial (MSCRT) with the classroom being the unit of randomization. Four time points over two years permit analysis through multilevel latent growth curve models. For teachers, measurement instruments include Attitudes Toward Science (ATS survey), the Head Start on Science Observation Protocol, the Preschool Classroom Science Materials/Equipment Checklist, the Preschool Science Classroom Activities Checklist, and the Classroom Assessment Scoring System (CLASS). For students, measures include the "mouse house problem," Knowledge of Biological Properties, the physics of falling objects, the Peabody Picture Vocabulary Test-Fourth Edition, the Expressive Vocabulary Test-2, the Test of Early Mathematics Ability-3, Social Skills Improvement System-Rating Scales, and the Emotion Regulation Checklist. Measures for parents include the Attitudes Toward Science survey, and the Community and Home Activities Related to Science and Technology for Preschool Children (CHARTS/PS). There are Spanish versions of many of these instruments which can be used as needed. The external evaluation is monitoring the project progress toward its objectives and the processes of the research study.

This project meets a critical need for early childhood science education. Research has shown that very young children can achieve significant learning in science. The curriculum Head Start on Science has been carefully designed for 3-5 year old children and is one of only a few science programs for this audience with a national reach. This study intends to provide a sound basis for early childhood science education by demonstrating the efficacy of this important curriculum in the context of a professional development model for teachers.

The ScratchEd project, led by faculty at the Massachusetts Institute of Technology and professionals at the Education Development Center, is designing, developing, and studying an innovative model for professional development (PD) of teachers who use the Scratch computer programming environment to help their students learn computational thinking. The fundamental hypothesis of the project is that engagement in workshops and on-line activities of the ScratchEd professional development community will enhance teacher knowledge about computational thinking, their practice of design-based instruction, and their students' learning of key computational thinking concepts and habits of mind.

The effectiveness of the ScratchEd project is being evaluated by research addressing four specific questions: (1) What are the levels of teacher participation in the various ScratchEd PD offerings and what do teachers think of these experiences? (2) Do teachers who participate in ScratchEd PD activities change their use of Scratch in classroom instruction to create design-based learning opportunities? (3) Do the students of teachers who participate in the ScratchEd PD activities show evidence of developing an understanding of computational thinking concepts and processes? (4) When the research instruments developed for the evaluation are made available for teachers in the Scratch community to use for self-evaluation, how do teachers make use of them? Because both computational thinking and design-based instruction are complex activities, the project research is using a combination of survey, interview, and artifact analysis methods to answer the questions.

The ScratchEd professional development and research work will provide important insight into the challenge of helping teachers create productive learning environments for development of computational thinking. Those efforts will also yield a set of evaluation tools that can be integrated into the ScratchEd resources and used by others to study development of computational thinking and design-based instruction.

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