This paper introduces a recently developed e-learning design and development tool called Learning Designer[TM] (version 1.0). Learning Designer assists learning designers and developers to build e-learning courses with Sharable Content Object Reference Model (SCORM) compliant learning objects using decision-making aids and recommended templates based on modern learning theories. Learning Designer assumes that learning is an active construction process as a learner participates in learning activities. Therefore, in this paper, a learning object is defined as a combination of content objects and learning activity objects. After six months of intense research on an e-learning design and development process, an explicit and standardized design and development process was identified, as was a tool to support the development process. Learning Designer includes four distinguishing features. First, it provides a step-by-step decision-making process for content design and development, with recommended templates based on learning theories and content design principles. Second, it employs customized learning sequencing of content and learning activity objects based on learning models. Third, it utilizes a guided metadata generator that meets the SCORM standards. Fourth, Learning Designer provides an embedded automatic manifest file generator that allows instructional designers to develop learning objects without having the technical knowledge to code manifest files for these learning objects. (Contains 9 figures.)