Teaching plan of "dealing with multimedia materials" in the first volume of seventh grade information technology published by People's Education Press I. Teaching design:
The content of this course mainly introduces the processing methods of multimedia materials, which requires high information technology ability. However, if we blindly pursue high-tech without students' knowledge level and acceptance, it will affect the improvement of students' knowledge and skills and the cultivation of attitudes, emotions and values.
Therefore, this lesson is mainly considered and designed from the following aspects:
1, starting from the analysis of students' beneficial attempts to finish their works in the early stage, selecting relevant materials for processing according to the theme of students' works will be closer to students, attract their attention and guide them to explore independently.
2. Due to the limited content and time taught by the teacher in class, it is impossible and unnecessary for us to introduce all the problems that students may encounter, so the teacher only introduces universal problems in class and provides relevant tutorials for students to learn. Students can find appropriate tips according to their own sections and columns, and complete the research independently (combined with the teacher's guidance).
Note: In the previous courses, students have worked out the design theme in groups, added some basic elements, and made a simple attempt to deal with multimedia information.
Second, the teaching objectives
1, can use appropriate tools to process related materials (knowledge, skills) according to needs, express (skills, emotions) in a reasonable form, creatively explore or solve practical problems (skills, attitudes, emotions), and complete electronic works.
2. Improve students' artistic appreciation (emotion and attitude) by appreciating excellent electronic works.
3. Establish a healthy awareness of information use and communication (values).
Third, the teaching process:
1, import:
Ask students to review the types of multimedia materials they encounter in their daily surfing:
Students answer: text, images, animation, audio, video, etc.
2. Question: In previous classes, everyone added such elements to the web page, but there are not always materials that meet our needs online. What should we do?
(Student answers: Deal with it yourself)
It is suggested that the information obtained should indicate the source and pay attention to its copyright information.
Let's take a look at some of your previous attempts, show the students' handling of words and pictures, and briefly summarize them.
Most students use the function of artistic words to process some keywords on the web page, and the pictures are only cut in some sizes.
Teacher's summary:
For the processing and expression of words, some simple deformations such as color, size, font, etc. You can use the web tool to set it.
Effect 1: Text wrapping. However, if you need to make some precise changes, you need to use some tools and software, such as realizing complex text wrapping effect, (showing relevant design drawings-screenshots of web pages), and playing FireWork software to make animation of text wrapping effect. Play it twice, and the teacher will pay attention to the supplementary explanation. ) Students try to do it while watching.
Effect 2: the text is luminous and three-dimensional. Sometimes we also hope that words can have special effects such as night light and three-dimensional words. What shall we do (the teacher shows the relevant renderings), and demonstrate the related operations of adding text and setting layer special effects by PhotoShop software.
Students observe and try to make.
4. Students' demand for image processing and expression.
List the problems in students' design: I hope to splice some contents into multiple pictures.
This paper introduces the selection tool (feathering option) in PhotoShop software, briefly introduces the concept of layer, and demonstrates the specific operation (the selection example is the splicing of CS game characters and scenes (a small part of the design content is the game introduction website))
5. Show a batch of excellent logo design drawings for students to appreciate and evaluate, and select 1 ~ 2 to let students think about how to use the knowledge introduced above to design.
(mainly using layer effects and selection tools)
6. Show a batch of excellent Bannar design drawings for students to appreciate and evaluate, and choose two to ask students to think about how to apply the knowledge introduced above to the design.
(Mainly used for image material and text fusion, layer effect, etc. )
7. Homework: Ask students to think about how to design their own website LOGO, Bannar, etc. Please refer to the relevant study materials for specific methods.
8. Respond to students' request for editing the sounds added in the webpage.
Introduce the common audio formats in web pages.
This paper introduces how to edit audio clips in Jinbo software: the choice of starting point and ending point (the teacher demonstrates and provides learning materials)
This paper briefly introduces how to add sound elements to web pages: background music and adding components.
9. Respond to students' requests for editing and processing videos added to web pages-in short, make analogy with sound parts.
Introduce common videos, my software and common video types.
Video editing skills: the choice of starting point and ending point (no demonstration, providing learning materials for students in need)
Remind students of the embedding method of video information: component method
10, assign homework, and each student group leader will assign relevant tasks to the group members:
Design LOGO, banners, etc. This group's website.
Clarify the style of each section of the website.
Handle pictures, audio and video materials according to module style requirements.
Create a page for each part (including text, pictures, audio and video, etc.). )
1 1. Each student studies the relevant study materials according to the assigned tasks, designs and processes them, and the team members discuss and cooperate with each other, and the teacher helps to answer questions.
Teaching objectives of the second teaching plan of "multimedia material processing" in the first volume of seventh grade information technology of People's Education Press.
1. Knowledge target
Learn to simply process sound, images and video materials as needed.
2. Ability objectives
Let students learn how to deal with sound material, picture material and video material, and cultivate students' ability to obtain and process information through students' operation and collaborative discussion; Cultivate students' innovative ability and 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; Cultivate students' cooperative spirit and collectivism through group cooperation.
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 computer room. A group of four people, each group chooses a student as the team leader.
Difficulties in teachers' teaching
Processing of sound materials
Processing of picture materials
Processing of video materials
Adjust students' ability level appropriately to achieve the balance of each group's strength. This course should be taught by at least one person or two people, a digital TV and a teacher's computer (for teachers to demonstrate and assign tasks). The whole computer room is connected to the internet in the form of broadband, and the network speed is very fast.
teaching process
First, create a teaching situation to stimulate students' interest in learning
In the last lesson, we have learned how to build a multimedia treasure house, but many times, the multimedia materials we collect are like unprocessed raw materials and need to be processed according to actual needs. Let's learn some simple multimedia material processing methods. First of all, please listen to what we used last class. Tape recorder? Made it? Quiet night thinking? Sound material.
Show me the sound: play what you recorded? Quiet night thinking? .
Teacher: Careful students may find that there is an unnecessary noise before and after the sound material we recorded. Let's take a look at how to remove these noises first.
Projection demonstration task: using what you learned last class, four people grope for a group to get rid of it? Quiet night thinking? Noise before and after. See which group finds the way to deal with the sound material first.
Students practice and teachers guide them when patrolling.
After most of the students finished, the teacher summarized the operation method and demonstrated the operation process:
Step 1: Run? Tape recorder? Program, open our recorded sound file, play the file, and find the location of the redundant part that needs to be deleted (23rd second).
Step 2: Move the positioning cursor to the position to be deleted in the 23rd second, and click? After I delete the current location? Menu command.
Step 3: Then move the positioning cursor to the position to be deleted in the third second, and click? I delete the content before the current position? Menu command. So we can put? Quiet night thinking? Get rid of the noise before and after, and it's done, right? Quiet night thinking? Processing of sound materials. Let's listen to it again.
Discussion: What should I do if I want to cut out the shadow area and keep only the middle part of the sound file?
Teacher: Are the students satisfied with the processed sound? Is there any way to make it better?
Student: Anything else? Quiet night thinking? Join guzheng music.
Teacher: Yes, we can still use it? Tape recorder? Are you online? Insert file? Function to merge two recording files into one file.
Teacher demonstration operation:
Step 1: Open the first sound file and move the cursor to the position to be inserted.
Step 2: Click? I insert files? A menu command will pop up? Insert file? Dialog box, in which you can select a sound file to insert and press? Are you sure? Button, the sound file is inserted into the specified location.
Read the insert file on page 17. Mixed with files? The difference.
Second, the processing of picture material.
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 computer to draw pictures, we have basically mastered the cutting and copying of pictures. Now, can you start? Painting? Software, cut the pictures in the material library.
Projection demonstration task: use drawing software to cut the picture.
The teacher toured the classroom and gave guidance to the students.
Besides cutting and copying, we also need to adjust the effect of the picture itself (brightness, color, etc.). ). Let's take a look at how to use ACDSee to adjust the brightness and color of the picture.
Use? ACDsee？ Software adjusts the brightness of the picture.
Teacher demonstration operation:
Step 1: Use? ACDSee5.0？ Open the original picture file.
Step 2: Click? Tool exposure? A menu command will pop up? Image exposure adjustment? Dialog box.
Step 3: Click? Automatic? Button, the software performs the automatic adjustment function and displays the adjusted effect. If you are not satisfied with the adjustment effect, you can also drag the slider until you are satisfied.
Step 4: Click? Apply? Button to save the adjusted image file.
Of course, the functions of ACDSee5.0 are not limited to these. We can also rotate and flip images. Use? ACDSee5.0？ The software completes the flip and rotation of the following picture to make a reflection effect. Ask the students to complete the following operations.
Projection demonstration task: give it a try: use the flip rotation function of ACDSee5.0 to complete the flip rotation of the following pictures and make a reflection effect.
Teachers check and guide students in class. After most of the students finished speaking, the teacher summed it up.
Thirdly, the processing of video material.
In front, we have learned some simple image processing methods. Next, let's learn about the processing of video material.
The processing of video material is more complicated, and we generally adopt? Super solution? The software cuts out the video material. Please watch the teacher's operation carefully.
Step 1: Start? Super solution? After the software, click? File open? The menu command opens the target video file to be intercepted.
Step 2: Click the play button to start playing the video file. Click? Cycle/select the admission area? Button. At this point, the playback progress bar in the middle of the interface is dimmed.
Step 3: Use at this time? Choose a starting point? 、? Choose the end point? Two buttons that determine the starting position of the clip to be clipped. Note: The specific location can be selected by dragging the slider on the playback progress bar.
Step 4: Click? Is the designated area of video MPG or MPV file? Button, one will pop up. Save data stream? Dialog box, after specifying the saved path and name in this dialog box, are you working hard? The dialog box shows the progress of the completion.
Discussion: What are the similarities and differences between audio material and video material?
Video image files of different formats usually have different sizes and different uses. For example, the video image files displayed on DVD players have high definition and huge image files; Video files published on the network have low definition, but are small in size and easy to transmit. By converting the video file format, the file size can be compressed. Usually, the format of image files is converted from uncompressed AVI format to compressed MPEG format to reduce the storage capacity of files. Can we also convert these formats? Super solution? To achieve.
Teacher demonstration operation:
Step 1: Click? Start the program hero super relief utility set common tools AVI to MPEG? , start the program.
Step 2: Click? File open? Menu command, find the target image file, and then click? Start conversion? Just press the button.
Four, after the lecture, the course summary and test.
This lesson focuses on the following three knowledge points:
With a tape recorder, you can simply handle sound materials and effects.
ACDsee software can be used to perform simple effect processing on pictures, such as cropping and adjusting exposure.
Using the "super-solution" software, you can simply process the video material, such as cutting the video, changing the file mode, reducing the file storage capacity and so on.