In my previous sharing, I mentioned the lesson preparation ideas for the eighth-grade class on ‘Interconnected Communication of the Internet of Things’. However, when it came time to actually teach this lesson, I overturned my previous ideas. I reviewed the content of the textbook and specifically focused on the Renjiao Edition’s lesson on ‘Diverse Data Transmission Methods’. I also looked at many excellent lesson examples online. Ultimately, I decided to set aside the communication protocols of the Internet of Things for this lesson and focus on the communication methods of the Internet of Things, designing more activities for the students. Below, I will discuss my lesson preparation process.
Part One: Introduction
Using the first three minutes of class, I played a video on the ‘Workflow of Shared Bicycles’ to guide students to recall how to use a shared bicycle, posing the following questions:
Question 1: How is the bike lock opened after scanning the code?
Question 2: How does the map know the location of the bicycle?
Question 3: Why is the unlocking sometimes fast and sometimes slow?
Question 4: After locking the bike, how does it know to stop charging?
Part Two: Exploration Activities
Students simulated the system to experience the workflow of using shared bicycles and categorized the data into four stages.
Part Three: Learning New Knowledge
Students independently read the textbook, searched online, and used AI tools to organize keywords related to various communication technologies, understanding their advantages, disadvantages, and applicable scenarios. The teacher used Mentimeter to guide students to input corresponding keywords in a word cloud format.
The teacher summarized that, based on their understanding, students were familiar with Bluetooth, WiFi, and 4G/5G technologies, but were relatively unfamiliar with Zigbee, NB-IOT, and LoRa technologies. Therefore, the teacher used videos and summary tables to deepen students’ understanding of these three technologies.
Finally, students used online exercises to understand that there is no universal technology. This brought us back to the questions posed at the beginning of the lesson, creating a cohesive learning experience.
Assignment Design
Reflection: During this lesson, I encountered some issues. When using Mentimeter for the word cloud interaction, I found that the network was not very reliable, which led to this part not being completed well. In the end, I had to let the students write on the blackboard. Therefore, teachers who have similar ideas should remember to test the network environment in advance.