The following is the content of the lesson plan "Processing Multimedia Materials" for seventh-grade information technology published by the People's Education Press. Everyone is welcome to browse and refer to it. For more relevant information, please pay attention to the lesson plan column. Lesson Plan 1 of "Processing Multimedia Materials" in the seventh-grade information technology volume of the People's Education Press Edition
1. Teaching design:
The content of this lesson is mainly to introduce the processing methods of multimedia materials, information technology Ability requirements are high, but if we are divorced from students' knowledge level and receptive ability, and blindly pursue high, new, and sophisticated technology, it will affect the improvement of students' knowledge and skills, and the cultivation of attitudes, emotions, and values.
Therefore, this class is mainly considered and designed from the following aspects:
1. It starts from analyzing the students’ useful attempts when completing their early works, and based on the theme of the students’ works. Selecting relevant materials for processing will be closer to students, attract students' attention, and guide students to explore independently.
2. Due to the limited teaching content and time in the classroom, it is impossible for us to introduce all the problems that students may encounter one by one, and it is not necessary. Therefore, the teacher only introduces common problems in the classroom. , and provide relevant tutorials for students to study. Students find appropriate prompts based on the content of the section they are responsible for, and complete independent exploration and research (combined with teacher guidance)
Note: In the previous classes, students have formulated the design theme in groups and added With some basic elements, a simple attempt was made to process multimedia information.
II. Teaching Objectives
1. Be able to use appropriate tools to process relevant materials (knowledge, skills) according to needs, express them (skills, emotions) in a reasonable form, and conduct creative exploration Or solve practical problems (skills, attitudes, emotions) and complete electronic works.
2. Improve students’ artistic appreciation (emotions, attitudes) through the appreciation of excellent electronic works
3. Establish a healthy awareness of information use and communication (values).
3. Teaching process:
1. Introduction:
Ask students to review the types of multimedia materials they encounter during their daily Internet browsing:
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Student answers: text, images, animations, audio, videos, etc.
2. Question: Everyone has added some such elements to the web page in the previous classes, but there is not always information that meets our needs on the Internet, so what should we do?
(Student answer: process it yourself)
The information obtained needs to be indicated with the source, and pay attention to its copyright information
3. Let’s take a look at some of the previous Try to show students' processing of words and pictures and briefly summarize.
Most of the students used the word art function to process some thematic text on the web page, and the pictures were only cropped to some sizes.
Teacher summary:
For text processing and expression, some simple transformations such as color, size, font, etc. can be set using web tools.
Effect 1: Text wrapping But if you need to make some precise modifications, you need to use some tools and software, such as to achieve complex text wrapping effects, (show relevant design drawings - webpage screenshots), play FireWork software Animate text wrapping effects. (Play it twice, the teacher will pay attention to supplementary explanations) Students watch and try to make it.
Effect 2: text glowing and three-dimensional, etc. Sometimes we also want the text to have special effects such as lighting, three-dimensional characters, etc. What should we do? (The teacher shows the relevant renderings), demonstrates how to add text using PhotoShop software, and Set operations related to layer effects.
Students watch and try to make.
4. Students express their needs for image processing
List the problems students have when designing: they want to splice parts of multiple pictures
Introduce the software of PhotoShop selection tool (introducing feathering options), briefly introduces the concept of layers, and demonstrates specific operations (the selected example is the splicing of CS game characters and scenes (the content designed by a small group is a game introduction website))
< p> 5. Display a batch of excellent logo designs for students to appreciate and evaluate, and select 1 to 2 to ask students to think about how to use the knowledge introduced previously to design(Mainly using layer effects and selection tools)
6. Display a batch of excellent Bannar design drawings for students to appreciate and evaluate, and select 2 to ask students to think about how to use the knowledge introduced previously to design
(Mainly using the fusion of picture materials and text, layer special effects, etc.)
7. Assign tasks: Ask students to think about how to design their own website LOGO, banner, etc. For specific methods, please refer to relevant learning materials< /p>
8. Respond to students’ requests for editing and processing of sounds added to web pages
Introduce the audio formats commonly used in web pages
Introduce how to edit audio clips in GoldWave software : Selection of starting and ending points (teacher demonstrates and provides learning materials)
Briefly introduce how to add sound elements to web pages: background music and adding component methods
9. Respond to students’ concerns about web pages Requirements for editing and processing of videos added in - Brief introduction, analogy with the sound part
Introducing common video software and common video types
Tips on how to edit video clips: Selection of starting and ending points (no demonstration, providing learning materials for students in need to study)
Prompt students on the embedding method of video information: component method
10. Assign homework, by The leader of each student group assigns relevant tasks to the group members:
Design LOGO, Banner, etc. for the group’s website
Clarify the style of each section of the website
According to The module style requires processing of pictures, audio and video materials
Create a page for each section (including text, pictures, audio and video, etc.)
11. Each student studies relevant tasks according to the assigned tasks Learning materials, design and processing, discussion and cooperation among group members, teacher guidance and Q&A. Lesson Plan 2 of "Processing Multimedia Materials" in the seventh-grade information technology volume of the People's Education Press Edition
Teaching Objectives
1. Knowledge Objectives
Learn to process sounds and images as needed and video material for simple processing.
2. Ability objectives
Let students learn the processing of sound materials, picture materials, video materials and other methods, and cultivate students’ acquisition through students’ operations and collaborative discussions Information, the ability to process information; cultivate students' innovative ability and innovative consciousness through the reproduction of knowledge.
3. Emotional goals
Through the display and evaluation of works, students can experience the joy of success and stimulate their creative enthusiasm; through group collaboration, students can cultivate their cooperative spirit and collectivism. Spirit.
Teaching focus
Processing of sound materials
Processing of picture materials
Processing of video materials
Teaching Method
Scenario introduction method, task-driven method
Class hours used
2 class hours
Teaching environment
Multimedia engine room. There are four people in a group, and each group chooses a student to be the group leader.
Difficulties in teaching for teachers
Processing of sound materials
Processing of picture materials
Processing of video materials
Make appropriate adjustments to students' ability levels to achieve a balance of power across groups. This course should be taught by at least one person or two people with one computer, one digital TV, and one teacher's computer (used for teachers to demonstrate and assign tasks). The entire computer room is connected to the Internet in the form of broadband, and the network speed is relatively fast.
Teaching process
1. Create teaching situations to stimulate students’ interest in learning
In the last class, we have learned how to build a multimedia treasure house, but in In many cases, the multimedia materials we collect are like unprocessed raw materials that need to be processed according to actual needs. Below we learn some simple multimedia material processing methods. First of all, please listen to the "Jingye Si" sound material we used the "recorder" to produce in the last lesson.
Show voice: play your own recorded "Jingye Thoughts".
Teacher: Careful students may find that there is a period of unnecessary noise before and after the sound material we recorded. Let’s first take a look at how to remove these noises.
Projection presentation task: Using the knowledge we learned in the last class, four people worked as a group to remove the noise before and after "Jingye Si". Let's see which group finds the first way to process the sound material.
Students practice and teachers provide guidance during inspections.
After most students have finished, the teacher summarizes the operation method and demonstrates the operation process:
Step 1: Run the "Recorder" program, open the sound file we have recorded, and play the file , find the location of the excess part that needs to be deleted (second 23).
Step 2: Move the positioning cursor to the position to be deleted at the 23rd second, and click the "I delete content after the current position" menu command.
Step 3: Then move the positioning cursor to the position to be deleted at the 3rd second, and click the "I delete content before the current position" menu command. In this way, we removed the noise before and after "Jingyesi" and completed the processing of the sound material of "Jingyesi". Let's hear it again.
Discuss: If you want to cut off the shadow area and keep only the middle part of the sound file, how should you do it?
Teacher: Are the students satisfied with the processed sound? Is there any way we can process it better?
Student: You can also add guzheng music to "Silent Night Thoughts".
Teacher: Yes, we can also use the "insert file" function in the "recorder" to merge the two recorded sound files into one file.
Teacher demonstrates the operation:
Step 1: Open the first sound file and move the cursor to the position where you want to insert it.
Step 2: Click the "I Insert File" menu command, and the "Insert File" dialog box will pop up. In this dialog box, select the sound file to be inserted and press the "OK" button. The sound file is inserted into the specified location.
Read the difference between inserting files and mixing with files on page 17.
2. Processing of picture materials
The processing of picture materials often involves basic operations such as brightness and color adjustment, cropping, copying, and flipping. In the process of learning to use computers to draw pictures, we have basically mastered the cropping and copying of pictures. Now ask students to start the "Paint" software and crop the pictures in the material library.
Projection presentation task: use drawing software to crop the picture.
Teachers patrol the classroom and provide guidance to students.
In addition to cropping and copying, we also need to adjust the effects of the picture itself (brightness, color, etc.). Let’s take a look at how to use ACDSee to adjust the brightness, color, etc. of the picture.
Use ACDsee software to adjust the brightness of the picture
Teacher demonstrates the operation:
Step 1: Use ACDSee5.0 to open the original picture file.
Step 2: Click the "Tool Exposure" menu command, and the "Image Exposure Adjustment" dialog box will pop up.
Step 3: Click the "Auto" button, the software will perform the automatic adjustment function and display the adjusted effect. If you are not satisfied with the adjustment effect, you can drag the slider until you are satisfied.
Step 4: Click the Apply button to save the adjusted image file.
Of course, the functions of ACDSee5.0 are not limited to these. We can also perform operations such as rotating and flipping images. Use the ACDSee5.0 software to flip and rotate the following pictures to create a reflection effect. Now ask students to complete the following operations.
Projection presentation task: Give it a try: Use the flip and rotate functions of ACDSee5.0 to flip and rotate the following pictures to create a reflection effect.
Teachers inspect and guide students in class. After most students have finished, the teacher summarizes.
3. Processing of video materials
Previously, we have learned some simple image processing methods. Next we will learn how to process video materials.
The processing of video materials is relatively complicated. We generally use the "Super Jieba" software to cut video materials. Please watch the teacher carefully.
Step 1: After starting the "Super Jieba" software, click the "File Open" menu command to open the target video image file you want to intercept.
Step 2: Click the play button and the image file starts playing. Click the Cycle/Select Admission Area button. At this time, the playback progress bar in the middle of the interface turns dark.
Step 3: At this time, use the "Select Start Point" and "Select End Point" buttons to determine the starting position of the clip to be intercepted. Note: The specific position selection can be completed by dragging the slider button on the playback progress bar.
Step 4: Click the "Specify the recording area as an MPG or MPV file" button, and a "Save data stream" dialog box will pop up. After specifying the path and name of the save in the dialog box, that is A "Processing" dialog box will pop up, showing the completion progress.
Discuss: What are the similarities and differences between the cutting of sound materials and video materials?
Video image files in different formats often have different sizes and have different uses. For example: the video image files shown on the DVD player have high definition and large image files; the video image files released on the Internet have low definition, but are small in size and easy to transmit. By converting the video image file format, the file size can be compressed. The format of image file conversion is generally to convert the uncompressed AVI format into the compressed MPEG format to reduce the storage capacity of the file. We can also achieve the conversion of these formats through "Super Jieba".
Teacher demonstration operation:
Step 1: Click to start the program Hero Super Jieba Utility Set Common Tools AVI to MPEG? to start the program.
Step 2: Click the "File Open" menu command, find the target image file, and then click the "Start Conversion" button.
IV. Completion of teaching, course summary and test
This lesson mainly talks about the following three knowledge points:
Using a recorder, you can simply record sound materials. of me and effects processing.
Using ACDsee software, you can perform simple effect processing on pictures, such as cropping, adjusting exposure, etc.
Using the "Super Jieba" software, you can perform simple processing on video materials, such as cropping videos, converting file modes, reducing file storage capacity, etc.