text: This teachnology can be so helpful for student because teacher can know there expressions. The teachnology can show the teacher the expression that the student have. The teachnology can show if the student fake smiles,worry,or confused. The teachnology is valuable for show the expression of the student. The understanding of the students in class.   when people ask you for advice they sometimes talk to more people than one they ask they ask for a good advice becuase if they will not have good advice they can't think about a good decision somtimes a person who have trouble in her or his life or any depression our any happiness in thier life they can't make control thier a control on them