Typical user, typical story

Typical User: Lao Chen

Name	Lao Chen
Sex, age	Male, 40 years old
Occupation, income	University teacher, ****** yuan/year
Knowledge levels and Competencies	Able to operate the computer skillfully
Living/Working Conditions	College teachers, work more busy
Motive Purpose difficult	He needed a piece of software to help him with his child's learning and save time to do his own business.
User Preferences	Reading
User ratio	？
Typical scenario	Lao Chen uses this software to help children learn
Typical description	Busy with work, no time for children's study

Typical User: Small stone

Name	Small Stone
Sex, age	Male, 8 years old
Occupation, income	Elementary school students, 0 yuan/year
Knowledge levels and Competencies	Primary school sophomore, has completed the operation of Lian Lian minus, is learning 2 to 5 multiplication
Living/Working Conditions	Mainly responsible for learning, others do not ask
Motive Purpose difficult	He needs a piece of software to exercise his computational power.
User Preferences	Play, will be simple computer operation
User ratio	？
Typical scenario	Verifying old Chen's formula and improving his computational ability
Typical description	Get old Chen and teacher's approval, finish homework early

Typical story:

As a parent, Lao Chen hopes to have a software that can help him tutor his children so that he can save time to get busy with his work.

Small Stone as a pupil, he hopes to have a software to help him learn better so that he can improve his computational ability and computational speed.

Scene:
(1) Lao Chen uses this software to make mathematical calculation questions;
(2) Small stone Use this software to verify the old Chen out of the problem, and test his calculation speed, the correct rate;

Use case diagram:

Typical user, typical story