"Screw Screw" instructional design
I. Course Analysis: https://www.shimengyuan.com/nianji/856.html
The lesson "Screw Tightening" is the last lesson of the Common Tools unit, which explores the activity of screw tightening on the basis of understanding common tools and functions. The textbook goes from shallow to deep, first observe the external characteristics of the screw, and then try to use the appropriate tool to fix the screw, and finally let the students try to use the screw tightening skills they have mastered to repair the objects around them and improve their lives.
Second, the analysis of academic conditions:
In the previous learning, students have mastered the learning methods of observation, comparison, induction, etc., and can grasp the characteristics of the observed objects through discussion and communication. This lesson will further guide students to make bold guesses in the tools they choose. Learning to use simple tools to repair items and improve lives on the basis of being able to use tools to fix screws correctly is also a sublimation of the course content.
III. Teaching Objectives:
Scientific knowledge:
1. Recognize the screw and understand its function.
2, can say the correct use of tools to fix the screw method, requiring the action specification, safety.
Scientific Inquiry:
1, can observe the shape characteristics of the screw, systematically choose the right tool to fix the screw.
2. Be able to discuss and communicate with classmates during the process of inquiry.
Scientific attitude:
1. Can have a strong interest in the activity of screw tightening.
2. Be able to judge whether the selected tool is suitable or not, and use facts to verify the conjecture in the process of use.
3. Be able to conduct cooperative inquiry and learning according to the requirements.
Science, Technology, Society and the Environment (STSE)
Learn to use simple tools to repair items and improve your life.
IV. Teaching Difficulties:
Teaching Focus:
1. You can fix the screw by observing the shape characteristics of the screw and choosing the appropriate tool.
2. Be able to master the method of fixing the screw with the tool, and operate the operation in a standardized manner.
Teaching difficulty: https://www.renjiaoshe.com/jiaocai/210.html
Instruct students on how to fix screws with tools and perform operations in a standardized manner.
V. Teaching Preparation:
There are hole strips, Phillips screws, slotted screws, Philreros screwdrivers, slotted screwdrivers, pointed pliers, foam boards, small toys, batteries.
VI. Teaching Process:
(a) Riddles are provoked and questions are asked
Teacher: Students, today the teacher brought you a riddle, please guess. The student guessed that the mystery was the screw.
Teacher: Students all know screws, but they don't know the names of each part, so let's get to know them. (PPT shows the names of each part of the screw.) ）
Teacher: Screws are common tools in our lives, and there are many members in them (PPT shows a variety of screws). There's a screw in there that's different from the others, did you find it?
Raw: It's a phillips screw, its screws are pointed, the others are flat heads.
Teacher: This is also a kind of screw, we can also call it a screw.
Teacher: Students, can you find the screw in the picture?
Raw 1: There are screws on the table surface and where the legs are connected.
Raw 2: There are screws where the toy strips are connected.
Teacher: The students found them, do you know what the role of the screw is?
Raw: Fixed role.
Teacher: Let's look at a piece of news about an accident caused by a loose screw. Screws don't look small, the role is really not small. So will you screw the screws?
(2) Discussion and exploration, hands-on practice
Activity 1: Select Tools
Teacher: Let's ask students who can screw up to introduce what tools they need to use.
Raw 1: A screwdriver (taper) is required.
Student 2: A wrench is required.
Teacher: It can be seen that these students usually like to operate hands-on and also pay attention to observing life. In addition to the tools introduced by the students, there are other tools for screw tightening, so please look at the screen carefully. (PPT display tool picture)
Teacher: It seems that it is really necessary to help different screws find the right tools, so let's help the screws. Please ask the group leader to take out the activity 1 report sheet prepared by the teacher for you, the group is the unit, after the discussion, connect the screws and the tools selected for it, and we will find the group to report in a moment and talk about why it is so chosen.
(Panel Discussion)
Teacher: Which group will talk about their own results?
Raw: Our group of Phillips screws with Phillips screwdrivers, slotted screws with slotted screwdrivers, hexagonal screws with sharp nozzle pliers, hexagonal screws with hex wrenches. Our group is wired in this way, according to the shape of the screw head above.
Teacher: Which group evaluates the response of this group?
Student 1: The results of our group are the same as those of their group, and I think their group said it very clearly, and found the key point of selecting tools.
Teacher: It seems that everyone still approves of this choice, so whether it is a tool selected according to the shape of the screw head, we still have to try to determine. So let's screw it!
Activity 2: Fixing screws
Teacher: If you want to screw the screws, you need to have the right way, the following teacher has prepared a video for everyone, which has important steps to screw, please watch carefully, and find classmates to repeat after the end.
(Screw Tightening Guide Video)
Teacher: Who is to say that the important is divided into those three steps?
Raw: Hold, tighten, twist.
Teacher: Let's start with the first level: rotating the small screw. Ask a classmate to read the rules.
Raw: 1, in small groups, each person choose a screw and the corresponding screwdriver, screwed on the foam board. 2. Fill in the "Activity 2" report form. 3, soft, serious, fast, accurate, the team members are completed, tidy up the equipment, sit upright.
(Group Operation Activity)
Teacher: At the end of the activity, I just saw that everyone was doing a very good job, which group reported their own report sheet.
Raw: We choose a Phillips screwdriver when we screw it, and a slotted screwdriver when we screw a slotted screwdriver. The choice of tool is related to the screw head of the screw.
Teacher: Students have mastered the basic method of screw tightening, so let's enter the second level: assembling a small master.
Think about how to fix the iron sheet with the hole together with the tool given in the picture? Try to do it and see which group is fast and good! Tell us about your group's experience.
Raw: When you start to tighten the screw, you can screw the nut on the screw by hand, but it is not too tight, and then clamp the nut with pliers and then use a screwdriver to screw it, so that the screw is tightened.
Teacher: The methods introduced by your group are still practical and effective.
(3) Practical application and expansion
Teacher: Let's move on to the third level: Toy Story
The teacher prepared a small toy for each group that you like, let's use the screws we learned today to load them with batteries and let the small toys work!
Teacher: In addition to the frequent occurrence of screws in our lives, they are also widely used in other fields, so let's take a look at the use in medical treatment.
Teacher: Let's do a little survey to see which areas need to use screws!