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Kids Can Code


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香港大學工程學院計算機科學系講師/教學顧問 崔俊傑博士

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Kids Can Code

  1. 1. Dr. Chui Chun Kit Lecturer , Teaching Consultant Department of Computer Science, Faculty of Engineering The University of Hong Kong Kids can code! Slides prepared by - Dr. Chui Chun Kit, for the event “寫Apps編程:ICT教學新潮流” For other uses, please email :
  2. 2. 2 External advisor of Let’s Code (Hong Kong) Association Limited (香港創意程式推廣協會) Lecturer/ Teaching consultant (講師/教學顧問), The University of Hong Kong: - Introduction to Computer Science - Computer Programming - Programming Technologies and tools - Database Management Systems - Modern technologies in WWW - Final year projects (Computer Science) - Web Technologies (MSc) About Kit Leader of the Interest Group for Computer Science and Education in HKUCS (電腦科技及教育小組) Welcome!
  3. 3. Sharing Coding training in tertiary education 電腦編程課程是怎樣的? Coding for everyone (kids) 電腦編程的普及 Kids can code? 3
  4. 4. Can kids code? Daniel Chao (10 years old) – invented the iRead monthly apps Students have to keep track of their daily reading time and send the report to teacher every month iRead - keep track of daily reading hours  Email to teachers Reading timer 4
  5. 5. Nick D'Aloisio (18 years old), founder of Summly Summly, summarizes long pieces of text into a few representative sentences. There are too much information! We don’t have time to read every article / news 2013: sold to Yahoo! for a reported $30 million USD Summly Can kids code? 5
  6. 6. Coding Coding / Computer Programming is NOT just about writing codes… 學習電腦編程並不只是學習寫程式… It is about problem solving (這是一門學習運用電腦科技解決問題 的專業,著重於邏輯和創意思維的訓練) – the study of using computer technologies to solve real-life problems. 6
  7. 7. Coding and Technology Coding and technology changes our world 編程與科技息息相關, 為我們的世界帶來變革 Online booking application Smartcard payment application 7
  8. 8. Coding and Technology Google map applications (e.g., route planning) Next dimension of Google Earth (模擬真實的3D世界) Google map floor plan (室內地圖和定位系統) Google’s Trekker Project Google street view (街景圖片) 8
  9. 9. Coding Acquire fundamental Coding / Computer Programming skill and implement your ideas! IDEA Innovative thinking (革新的思維) Creativity (創意) Vision (對未來的遠見) Programming Skill set (編寫程式的能力) 9
  10. 10. Our future? Check out the following technologies that will certainly change our future world. Quadcopters Cloud technologies 3D printing technologies Self driving car / driverless car Mobile technologies/ Google glass/ smart contact lens 10
  11. 11. Coding training in tertiary edu. Slides prepared by - Dr. Chui Chun Kit, for the event “寫Apps編程:ICT教學新潮流” For other uses, please email :
  12. 12. Coding training in HKU All Engineering freshman have to learn programming. Civil Engineering (土木工程) Electrical and Electronic Engineering (電機電子工程) Mechanical Engineering (機械工程) …etc Many non-engineering students also take the programming courses in HKU. Faculty of Business and Economics (經濟及工商管理學院) …etc 12
  13. 13. Why coding is important? Programming is a basic literacy (編程是學習科技的基本工具) The students of today need to be able to understand and control new technologies. Understanding technologies It’s a way to create change (編程是發揮創造力, 為未來帶來變革的工具) “You have an idea for then next big tech innovation? Great. Can you bring it to life?” Inventing new technologies 13
  14. 14. Coding – Stage 1 Variables (變數) Flow of control (控制指令流程) ( repeat, if-else conditional branching, switch) Function / procedure Programming language - The ability to “communicate” with a computer by giving sequence of instructions. 學會基本編程向電腦下達指令,控制電腦 Learning basic programming language 學習基本編程語言 …etc 1 14
  15. 15. Coding – Stage 2 Program design - The ability to plan, design and implement a user-friendly software product 學會設計,管理, 編寫軟件的流程. Introduction to software engineering (軟件工程學) Introduction to data management (數據處理科技) …etc Learning basic programming language 學習基本編程語言 Program design 學習如何設計軟件 2 15
  16. 16. Electronic commerce technologies (電子商務科技) Coding – Stage 3 Advanced Computer Science Technology 更深入瞭解電腦科技 Advanced technologies - The study of using various computer technologies to solving real-life problems. Internet technologies (互聯網科技) Artificial intelligence (人工智能科技) Learning basic programming language 學習基本編程語言 Program design 學習如何設計軟件 Computer security technologies (電腦安全科技) 3 16
  17. 17. Ultimate goal Programming skill set Problem formulation Problem solving Coding Creativity I have an idea! Logical thinking, Domain knowledge This is my invention! This is my strategy! To foster intellectual creativity (創造力) & logical thinking skills (邏輯思考能力) of our future generation. 17
  18. 18. Coding for everybody (kids) Slides prepared by - Dr. Chui Chun Kit, for the event “寫Apps編程:ICT教學新潮流” For other uses, please email :
  19. 19. Global trend Estonia - Introducing computer programming learning for all children attending school (starting from age 6) in 2012. UK – UK Department for Education plans to teach “computer science" to all children from age 5 in 2014. 19
  20. 20. HK Digital 21 strategy Hong Kong – 2014 Digital 21 strategy (數碼21資訊科技策略): Equipping students with programming capabilities can help foster a logical (邏輯) and creative (創意思維) mindset. Advises schools to allocate at least 30% of time of the Computer Literacy subject to programming concepts at junior secondary level. Resource: 建議學校應在初中生的電 腦課程中加入編寫程式的 部分,並提倡學校分配至 少30﹪的時間於課程之上 20
  21. 21. 21 Building-block programming. Scratch programming is based on a building-block Metaphor. Learners will drag-and-drop blocks from the library to create “stacks” (procedures) that govern behaviors of the object. // This is a sample C++ program #include <iostream> using namespace std; int main(){ cout << "Hello!" << endl return 0; } v.s. Need to type the code and easy to make syntax error In function `int main()': expected `;' before "return" Simple! No syntax error! Interesting and easy-to-use graphical interface . 21 Scratch
  22. 22. Example 1 – logical thinking 1 2 The blocks draw a Circle 1 2 1 2 1. Move 10 steps 2. Turn 10 degree Repeat 36 times, turned 360 degrees in total. Can you use the coding blocks to draw the above figure ? 22
  23. 23. Example 1 – logical thinking Draw 35 circles – Repeat 36 times: Draw one circle, turn right by 10 degree. Draw one circle 1 2 1 2 1 1 2 … 23
  24. 24. Example 2 – Divide & conquer Let’s build a shooting game! Keyboard to control the cannon stand, moving along the y-axis 1 When the space button is pressed, fire! 2 Ghost moving up and down.3 When the ghost is hit by the bullet, say “Oops! It hurts!”4 24
  25. 25. Example 2 – Divide & conquer Step 2. Design the actions of each object. Movement (up and down) controlled by keyboard. Cannon standBullet Fire when space is pressed. Ghost Move up and down Say “Oops it hurts” when get hit. Action Step 1. Define the objects in the application.
  26. 26. Example 2 – Divide & conquer Move Bullet to Cannon stand Make the Bullet visible Move Bullet to left horizontally until it touches the edge Hide the Bullet 26 When part What part Problem solving: Divide and conquer – divide the big task (fire action) to a number of smaller subtasks so that each subtask can be implemented easily. Fire
  27. 27. is a free programmable toolkit that enables kids to create their own animated stories, games and interactive art. 27 animated stories games interactive art Kids can code!
  28. 28. Self-learning social platform Scratch cloud – An online community that allows everyone to share their Scratch applications, view and comment on other’s projects. You can also “See inside” other’s project and learn how they develop the program block stacks of their applications. 28
  29. 29. Building apps is very easy... Everything is right in front of you. Components and programming blocks are in drawers. Just find, drag, and drop. lets you develop applications for Android phones using a web browser. Drag Drop I want to have a button in my apps  App Inventor 29
  30. 30. Workshop series 2013 Easy coding: Scratch and App Inventor Introduction to data management Introduction to artificial intelligence 2014 Summer: Introduction to 3D printing technologies 01100101110 11001011101 10010110110 30
  31. 31. Our children, our future Our goal is to enable our future generation to become creators (創造者), not just consumers (消費者) of technology. This is my invention! v.s. Professor Harold Abelson, MIT Creator of MIT App Inventor 31
  32. 32. Let’s code! Dr. Chui Chun Kit (傑) Department of Computer Science The University of Hong Kong Slides prepared by - Dr. Chui Chun Kit, for the event “寫Apps編程:ICT教學新潮流” For other uses, please email : Mr. John Huen Let’s Code Please contact
  33. 33. Self-learning resources Online class - 33 Scratch wiki - The Scratch Wiki is a free, collaboratively- written wiki that provides information about the Scratch programming language