Abstract: A computerized education device, a multimedia production device and associated methods in accordance with the present invention provide students with an adaptive and proactive interaction learning environment. The computerized education device allows students to log in and take tests and comprises a computer-based learning platform, a content database, a student database and a processor. The multimedia production device has multiple-user and multiple-tasking capabilities to produce multimedia materials and comprises a managing server and multiple stations. A FLASH component conversion method generates a Flash component without expensive creation work and comprises acts of retrieving content, sampling, generating a small web format file, generating a data model and generating a FLASH quiz. The interacting method changes difficulty of content based on responses of students and comprises acts of qualifying, entertaining and compiling statistics.

Abstract: A light-emitting module with a focus adjusting function is described. A light-emitting module includes a light-emitting diode, a first hollow cylinder and a second hollow cylinder. A first hollow cylinder encloses the light-emitting diode and has a first thread around an outer surface thereof. A second hollow cylinder has a second thread on an inner surface thereof, wherein the first thread is meshed with the first thread such that the second hollow cylinder is telescoped from the first hollow cylinder when the second hollow cylinder rotates relative to the first hollow cylinder. An optical lens is disposed within the second hollow cylinder, wherein the optical lens moves relative to the light-emitting diode so as to adjust a projected beam's focus.