《截交线的投影作图》多媒体传授教化设计(国外英文资料).docVIP

《截交线的投影作图》多媒体教学设计(国外英文资料) Page explanation: the page for a task analysis, design of main purpose is to let the students to solve the problem of explicit learning this lesson, to achieve the goal, to strengthen pertinence, the purpose of teaching and students learning. Page 3: task execution page Page explanation: this page for a task implementation, mainly introduces the truncated, cutting plane, the intersecting line, the truncated the concept, this page has a three-dimensional image, image directly can let students see the concept definition of the position, to facilitate students understanding of the concept. Page 4: task execution page Intersecting line page explanation: this page is mainly for the interpretation of the basic features, there are two pictures, can let the student see directly process of truncated triangular pyramid is plane, and easy to understand the intersecting line of two basic properties. Prepare for the drawing of the line in the back. Page 5: task execution page Page explanation: this page intersecting line of basic drawing step teaching, and to undertake the basic properties of intersecting line above and below the upcoming instances of intersecting line drawing, drawing process is also in the concrete implementation and strengthening the page said to teach four drawing steps. Page 6: task execution page Intersecting line projection page explanation: this page for the specific construction process, image directly by animation illustrates the concrete construction process, each special point, usually the animation set points and drawing lines with red line drawn out, and the students more clearly see drawing process and results. Page 7: task execution page Explanation: this page shows the projected picture of the four pyramid in the example, so as to make it easier for the students to understand the correct result of the final drawing. The trace does not need to be preserved, preventing some students from leaving the trace, and the result