Early adolescents, particularly from underrepresented or marginalized communities, may feel disconnected from school science leading to a lack of engagement. The lack of connection between their out of school experiences and school science may lead them to devalue science. This study examines interviews with 56 middle school students and 12…

In 1985, the leaders of the Smithsonian Institution and the National Academies established the National Science Resources Center (NSRC) to address the critical problem identified by the "A Nation at Risk" report. Through its Curriculum Development Center and in partnership with its publisher, Carolina Biological Supply Company, the NSRC developed…

This article provides an extended, comprehensive example of how teachers, schools, districts, and external factors (e.g., parental pressure and policy mandates) shape curriculum research in the U.S. It retrospectively examines how three different middle school curriculum units were implemented and scaled-up in a large, diverse school system. The…

This study compared the efficacy of 3 approaches to professional development in middle school Earth science organized around the principles of Understanding by Design (Wiggins & McTighe, 1998) in a sample of 53 teachers from a large urban district. Teachers were randomly assigned to a control group or to 1 of 3 conditions that varied with…

This study characterizes how learning and teaching differs as the responsibility for choosing curriculum goals and the strategies to reach those goals shifts between teacher and the students. Three different pedagogical approaches were used with 125 seventh-grade and eighth-grade students. All three curricula focus on electromagnetism, and were…

In this study it was aimed to i) diagnose the topics that are perceived as difficult at the level of 6-8 science classes and ii) find out the reasons behind of these difficulties as well as propose suggestions to remedy these difficulties. Eighteen science teachers and three hundred students attending different types of secondary schools…

The purpose of this study is to compare the efficacy of three different approaches to professional development in Earth science education: preparing teachers to "adopt" expert-"design" curricula; preparing teachers to use a principled approach to design curricula; and preparing teachers to use a principled approach to "adapt" curricula. The claims…

In this paper, an ethnobotany curriculum is used as a case example of one approach to incorporating the insights and needs of the local community into the curriculum development process. This curriculum development was carried out in the "Kiriwong Community" in Nakornsrithammarat Province, Southern Thailand. The ethnobotany curriculum…

To reduce curricular fragmentation in science education, reform recommendations include using common, unifying themes such as scaling to enhance curricular coherence. This study involved 215 participants from five groups (grades 5, 7, 9, and 12, and doctoral students), who completed written assessments and card sort tasks related to their…