Samir should work on his communication and presenting skills in the language to become more effective at participating in a formal discussion.
A group discussion is a conversation about a certain subject among a number of people. Be confident, relevant to the issue, considerate of others, and use good, clear English when speaking during a group conversation.
Respect other speakers' contributions.
You can learn something if you pay close attention to what other speakers have to say.
Mention the things that fascinate you.
Always keep in mind that a discussion is not a fight.
Respect different points of view.
Before you talk, give your contribution some thought.