Collaborative learning has replaced traditional teaching. Researches show that collaborative learning is more effective. Both teacher and students need to have appreciative skills. Students have to learn to collaborative with others. It seems very simple but is very difficult. They have to learn how to manage their relationships.  Respect, empathy, acceptance, solidary are essential competences for collaborative learning. Moreover, teachers have to motivate students to discover knowledge by changing ideas or to find problems solutions by helping each other.
In Greece primary school teachers’ don’t have interactive blackboards. They try to make their classes, more accommodative and attractive for students, with warm colors and colorful pictures. They create collaborative classes by moving desks. But despite the difficulties, they provide collaborative learning. The most of them separate students in groups during lessons.
I believe that collaborative learning enhance cohesion of class and improve relationships between students.  Usually, I divide my students in group and give to any group work to one of aspect on the learning object. In the end all the groups present their work in all students.  In the end all together discuss about the learning object, connecting the previous knowledge trying to understand the learning object in total. I believe that sometimes the new technology facilitates collaborative learning, but sometimes it doesn’t contributing anything either to students’ collaboration neither to students’ Knowledge. Many times, teachers' projects focus in new technology activities, but they don’t achieve the learning targets.
When class doesn’t have cohesion, class management during collaborative learning is problem. Firstly, teacher have to achieve cohesion between students, and then to implement collaborative learning. Team working evaluation is difficult, too. If you want to be right, you have to combine collaborative evaluation with personal tests. The assessment tools are very interesting.
Collaboration with my colleagues is very good. Sometimes I have faced difficulties. Many teachers don’t want to collaborate with others.  It seems, collaboration scare some teachers. Collaboration demands communications and negotiation skills. In students groups, some students have learning and social disabilities, so they isolate from the others. To avoid this, it is necessary, students responsibilities in working group to related with their skills
The collaborative learning demands collaborative skills from our pupils. Many times, teachers face difficulties to manage pupils’ work in groups effectually. They forget that first have to teach our pupils to negotiate, to manage conflicts, listening to the ideas of others, to agree all together what must be done, to take responsibilities etc. Technology supports collaborative learning, because organizes team work better and makes learning more attractive.   
Professor Butler’s rubric helps to improve the quality of collaboration and to choose the most appropriative collaboration type. It is a very useful rubric. It is very important teacher to know the type and quality of collaboration taking place in the learning activities he designs. Only a qualitative work in group leads pupils in effective learning. Pupils, through collaboration, learn how to learn and to build good relationships with their peers.