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Authoritative PPT Summary
"Digital Coding" PPT
Part One: [Learning Objectives]
1. Preliminarily understand some simple information and coding meanings contained in postal codes and ID numbers, explore simple methods of digital coding, try to use mathematical methods to solve simple problems in real life, and initially cultivate application awareness and practical ability.
2. Preliminarily understand some simple information contained in ID card coding and the meaning of coding through activities such as investigation, comparison, guessing, and communication, and deepen the understanding of digital coding ideas through practical activities.
3. Further understand the wide application of digital coding in daily life, and enhance the understanding and application awareness of mathematical problems in life.
[Learning Key Points]
Understand the rules of postal codes and ID card codes, and initially learn to code.
Digital coding PPT, part 2: introducing new lessons
Students, how many people are there in our class? What's your student number? If the teacher does not call names when calling roll, how can he distinguish the students in the class?
Numbers can not only be used to represent quantities and sequences, but can also be used to code. Today the teacher is going to teach you a math lesson about digital coding.
Digital coding PPT, part three: exploring new knowledge
(1) Understand the structure and meaning of postal codes
Do you know what a zip code consists of?
Extension: Postal code is a modern measure for sorting letters. Do you know when our country started using it?
China began to develop postal codes in 1974. After about five years, the "National Postal Code Pilot Plan" was formulated and piloted in 1978 in Liaoning, Shanghai, Jiangsu and other provinces and cities.
It was officially promoted and implemented nationwide on July 1, 1980.
The "Postal Law of the People's Republic of China" implemented in 1987 clearly stipulates that postal codes should be used for mail delivery.
(2) Understanding ID cards
The ID number consists of 18 digits:
36****198505112677
44****197502198379
37****197806180866
36****199004136966
11****20050311318X
Try it and give each student in the school a student number.
What information should be included in the student ID number?
Digital coding PPT, part 4: Consolidation and deepening
The following four ID numbers belong to Xiao Ming’s father, mother, grandfather and grandmother respectively. Can you tell them apart carefully?
Tip: Odd numbers are male, even numbers are female
Digital Coding PPT, Part 5: Class Summary
(1) Understand the structure and meaning of postal codes
(2) Understanding ID cards
Digital coding PPT, part 6: homework
1. What did you gain from today’s study?
2. Assign homework.
Keywords: Free download of third-grade mathematics PPT courseware from the People's Education Press, digital coding PPT download, .PPT format;
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