Typical user description: Lao Chen
| The name | Mr. Chen |
| age | 40 |
| income | 4000 / month |
| Represents the proportion and importance of users in the market | Not much. A larger percentage of parents don’t have time to tutor their children |
| Typical scenarios for using this software | The arithmetic |
| The environment in which the software/service is used | The computer |
| Life/work situation | Able to operate computer skillfully |
| Level of knowledge and ability | Undergraduate course graduation |
| User motivations, goals, and difficulties | Tutor your kids to save more time |
| User preferences | Internet, business learning |
Typical user description: small stone
| The name | Small stone |
| age | At the age of eight |
| income | No formal income |
| Represents the proportion and importance of users in the market | A lot, the proportion inside primary school is larger |
| Typical scenarios for using this software | Enter the answer to answer the arithmetic problem |
| The environment in which the software/service is used | The computer |
| Life/work situation | Will use a computer |
| Level of knowledge and ability | Primary school students |
| User motivations, goals, and difficulties | Improve learning ability |
| User preferences | Play a game |
Use case diagram:
User story:
Mr. Chen: As a parent who is proficient in computer operation, I hope to help my children learn by giving arithmetic problems through this software, so as to save more time.
Small stone: as a grade two primary school students, I hope to practice answering speed and accuracy through this software, in order to evaluate the learning situation.
A written description of the scene:
Came home from work at night, Mr. Chen want to go to take a bath, don’t want to let the small stone always beside the computer to play game, at this moment, Mr. Chen opened the calculator software, choose a random number, and set up a double-digit 50 road, even add the reduction arithmetic for small stone to do, timing, small stone began to answer, Mr. Chen is comfortable to take a bath. After Chen completed a series of operations, little Stone only had to write down his own answers at the end of the given equations and fill in the blanks. After Chen took a bath, he went to see the small stone to do the problem, through many times of practice, statistics of small stone’s learning situation and do the problem efficiency.