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Contest Requirements / Judging Criteria


Division Coding Platform / Software Requirements
Primary School

Participants should use App Inventor for developing their app.

Create a new app to arouse the public awareness of sustainability

Junior Secondary



Each participating team shall submit the followings simultaneously:

1)App Inventor project file

  • The file should be an AIA file.
  • File size limit is 1GB

2)Introductory Video

  • The video shall demonstrate how the app arouses the public awareness of household waste as a sustainability issue and the characteristics of your work, demonstration of operation etc.
  • The video should be within 3 minutes with the file size limit of 1 GB.
  •  Video format should be AVI、MP4、MPEG、MPG、MOV or WMV

3)Introductory PowerPoint

  • The PowerPoint file shall include the ideas of your work, technical aspect of the app and division of labour etc.
  • The PowerPoint file shall contain no more than 10 slides with the file size limit of 200MB
  • File format should be PPT or PPTX



*Submission Deadline is changed to 12:00 Noon, 3 April 2019 (Wednesday). 


Judging Criteria


Expression of Theme

  • Correspond with the theme of reducing household waste and demonstrate a good understanding of the problem
  • Demonstrate appropriate ways of solving the problem

Creativity and Aesthetic Value

  • Demonstrate creativity and uniqueness in the content, organization, utility and design
  • Show sense of beauty in the design, color and proportion

App Design Techniques and User Experience

  • Demonstrate organized, logical and comprehensive app design
  • Provide User-friendly design and clear instructions

Team collaboration and communication

  • Demonstrate a good plan and implementation of team collaboration
  • Clearly describe the design and operation of the work in the introductory video and PowerPoint