【正文】 ource will be designed according to the three principles of , the resource will display the information of biomass heating system flexibly on PowerPoint, you can vary the size of text, images, graphs, the color used for information, and the layout of , for the purpose of offering alternatives for auditory and visual information, this resource will provide a casting screen version and animations which illustrate how it , to let some students who have not learned some knowledge of thermofluids learn this without barriers, links to prior knowledge will provide in this resource will be represented in dominant language, but some key information will also available in addition, some plicated words will have pronunciation to the second principle of UDL, to give the students a general structure of biomass heating system, 3D models of it will be designed and will provide a way of understanding to someone who likes to learn by 3D get students engaged, a class discussion will be in the end part of the resource, so the students can reflect their learning outes and learn more from links to further learning will also be provided which is good for independent heating system monly used in European countries is a good example of the appliance of biomass for undergraduates and may have a good prospect in south part of of designWhen designing and developing a training program, following a model will help you do it systematically, steeply, and many years, educators and instructional designers like to use an instructional design method called “ADDIE”.The ADDIE model is basically a generic, systematic, stepbystep framework used by instructional designers, developers and trainers to ensure course development and learning not occur in a haphazard, unstructured way.(Butter, 2011)ADDIE model consists of analysis, design, development, implementation, and design a resource which topic is introduction of biomass heating system, it would be a good idea that the goals of the course are clear, learner’s need can be evaluated, and the training program can be implemented to the function ofADDIE model, this model is a good mentioned above, the junior undergraduates are the target are supposed to have the knowledge of foundational mechanical some of them may lack of this knowledge, several websites links or reference book will be placed in the end of this , the desired outes will be listed at the begin meet the demands of learners, portable, printable, and functional resources will all be it is just an instruction of biomass heating system, the contents of the resource are mainly about concept, principle of working process, and technical names, decisionsThe resource is about an introduction of biomass heating system, and the learners are supposed to be third year reduce barriers, optimize levels of challenge and support, to meet the needs of all learners from the start(CAST, 2011), principles of UDL was used to design the , to design this resourcein a consistent and reliable way, “ADDIE” design module was addition, cast one of the main methods was used to produce a screen video form to make this resource more , the author conducted the “Analysis” step of ADDIE(Butter, 2011).This resource is mainly focused on the introduction of biomass heating system(BHS), so the objects of it are definition, background, principles and ponents of , BHS is a part of renewable energy which is a professional principle of mechanical engineering(ME), thus the target learners are supposed to be junior ME , if you are not target learner, you can use this resource for learning by following its , in order to meet the objects mentioned above, this resource was designed in PowerPoint form containing six parts which are background, outes, principles, ponents, disc amp。assign and resources amp。 reference may help some learners for further learning , this resource was developed to video by screen castomatic tool and PDF form to be accessed by more first principle of UDL indicates that resources with an alternative form such as video, animation, paper, more accessible for some who don’t like mon this resource was developed, this resource was implemented in a class of small group of Chinese result is in the range of expectation and to ADDIE, this resource was evaluated by learning object review instrument(LORI)(Nesbit, et al., 2007).Reflection/ConclusionUDL principles had been applied to the development of this the result of implementation of this resource is good and main good thing is that most of the students had gained the learning outes in a fortable, easier, and engaged think the UDL in my resource gavemany benefits in my , the background of this resource is light yellow, while the front of text is black or I conducted my teaching had been disturbed before because of some muzzy , Icontrolled my teaching very well, because there was a guide on the left of the managed my time and sequence perfectly would never have to roll my PowerPoint to find what I need in the resource any really saved my time an