Over the last few years, the use of the web and virtual technologies in school education has become widespread. Virtual Labs create and use a complete environment within which students can interact to apply theory and practice science process skills to real-world issues. Virtual Labs represent a powerful tool for learning. This book focuses specially on Theoretical Foundation of Virtual Lab and Science Education, in addition to, Design of a Web-Based Virtual Lab as a Research Environment and comparing the impact of a web-based Virtual Lab (WVL) environment with that of traditional educational experience in relation to conceptual understanding and science process skills in natural science for fourth grade primary school students. The results go beyond previous research results, which did not focus on very young learners. The use of WVL contributed considerably in enriching learning outcomes; the results provided an empirical evidence of the advantages of web-based learning (WBL) for education policy makers. This book will claim to everyone, close to any field of study, looking for effective means to link the gap between academic learning and practice.