Interactive computer simulations with complex representations and sophisticated graphics are a relatively new addition to the classroom, and research in this area is limited. We have conducted over 200 individual student interviews during which the students described what they were thinking as they interacted with simulations. These interviews were conducted as part of the research and design of simulations for the Physics Education Technology (PhET) project. PhET is an ongoing project that has developed over 60 simulations for use in teaching physics, chemistry, and physical science. These interviews are a rich source of information about how students interact with computer simulations and what makes an educationally effective simulation. We have observed that simulations can be highly engaging and educationally effective, but only if the student's interaction with the simulation is directed by the student's own questioning. Here we describe our design process, what features are effective for engaging students in educationally productive interactions and the underlying principles which support our empirically developed guidelines. In a companion paper we describe in detail the design features used to create an intuitive simulation for students to use.

We present two studies documenting the effectiveness of the use of a computer simulation with Tutorials in Introductory Physics1 in a transformed college physics course.2 An interactive computer simulation, entitled the Circuit Construction Kit (CCK),3,4 was introduced to investigate its possible impact on students' conceptual understanding. The first study compared students using either CCK or real laboratory equipment to complete two Tutorials on DC circuits. The second study investigated the impact of the simulation's explicit representation for visualizing current flow by removing this feature for a subset of students. In the first study, students using CCK with Tutorials performed slightly better on measures of conceptual understanding compared to real equipment, as measured by exam performance soon after the intervention. In the second study, students using CCK with and without the explicit visualization of current performed similarly to students using real equipment, though on some specific questions we note significant variation in student performance. We discuss the implications of adding (or removing) such representations within computer simulations.

We present two studies documenting the effectiveness of the use of a computer simulation with Tutorials in Introductory Physics1 in a transformed college physics course.2 An interactive computer simulation, entitled the Circuit Construction Kit (CCK),3,4 was introduced to investigate its possible impact on students' conceptual understanding. The first study compared students using either CCK or real laboratory equipment to complete two Tutorials on DC circuits. The second study investigated the impact of the simulation's explicit representation for visualizing current flow by removing this feature for a subset of students. In the first study, students using CCK with Tutorials performed slightly better on measures of conceptual understanding compared to real equipment, as measured by exam performance soon after the intervention. In the second study, students using CCK with and without the explicit visualization of current performed similarly to students using real equipment, though on some specific questions we note significant variation in student performance. We discuss the implications of adding (or removing) such representations within computer simulations.

We present two studies documenting the effectiveness of the use of a computer simulation with Tutorials in Introductory Physics1 in a transformed college physics course.2 An interactive computer simulation, entitled the Circuit Construction Kit (CCK),3,4 was introduced to investigate its possible impact on students' conceptual understanding. The first study compared students using either CCK or real laboratory equipment to complete two Tutorials on DC circuits. The second study investigated the impact of the simulation's explicit representation for visualizing current flow by removing this feature for a subset of students. In the first study, students using CCK with Tutorials performed slightly better on measures of conceptual understanding compared to real equipment, as measured by exam performance soon after the intervention. In the second study, students using CCK with and without the explicit visualization of current performed similarly to students using real equipment, though on some specific questions we note significant variation in student performance. We discuss the implications of adding (or removing) such representations within computer simulations.

This short paper is a contribution to the Organisation for Economic Co-operation and Development (OECD) expert workshop to help identify "motivations, benefits and barriers for institutions producing open educational resources". The motivations are examined by looking at the reasons behind the launch by the Open University in the UK of a web based collection of open educational resources, OpenLearn. OpenLearn launched on October 25th 2006 and reflects an initiative backed by the William and Flora Hewlett Foundation and the Open University to develop a learning environment (LearningSpace) and an accompanying educator environment (LabSpace) giving free access to material derived from Open University courses. There are of course many reasons for the taking part in open educational resources and so this paper considers motivations in community, organisational, technical and economic terms.

The paper was initially prepared for the OECD experts meeting on Open Educational Resources 26-27 October 2006 in Barcelona, Spain.

This short paper is a contribution to the Organisation for Economic Co-operation and Development (OECD) expert workshop to help identify "motivations, benefits and barriers for institutions producing open educational resources". The motivations are examined by looking at the reasons behind the launch by the Open University in the UK of a web based collection of open educational resources, OpenLearn. OpenLearn launched on October 25th 2006 and reflects an initiative backed by the William and Flora Hewlett Foundation and the Open University to develop a learning environment (LearningSpace) and an accompanying educator environment (LabSpace) giving free access to material derived from Open University courses. There are of course many reasons for the taking part in open educational resources and so this paper considers motivations in community, organisational, technical and economic terms.

The paper was initially prepared for the OECD experts meeting on Open Educational Resources 26-27 October 2006 in Barcelona, Spain.

This short paper is a contribution to the Organisation for Economic Co-operation and Development (OECD) expert workshop to help identify "motivations, benefits and barriers for institutions producing open educational resources". The motivations are examined by looking at the reasons behind the launch by the Open University in the UK of a web based collection of open educational resources, OpenLearn. OpenLearn launched on October 25th 2006 and reflects an initiative backed by the William and Flora Hewlett Foundation and the Open University to develop a learning environment (LearningSpace) and an accompanying educator environment (LabSpace) giving free access to material derived from Open University courses. There are of course many reasons for the taking part in open educational resources and so this paper considers motivations in community, organisational, technical and economic terms.

The paper was initially prepared for the OECD experts meeting on Open Educational Resources 26-27 October 2006 in Barcelona, Spain.

Engaging employers with youth in workforce preparation activities is widely supported by program providers as a good practice. Research, although limited, supports this practice as well. This paper describes the findings from 58 interviews with youth program providers, employers, and policy-makers that explored the inclusion of employers in workforce preparation activities for disadvantaged youth. We examined the degree to which youth and employers are prepared to engage with each other, how race and culture influence the entire experience, and whether program and policy efforts to increase employer engagement are in scale with youth program demand. The research highlighted important disconnects between program providers and employers and the affect these disconnects may have on expanding employer involvement. Implications for program development are also discussed.