
2. Be careful with the equipment - everything can fail so have some additional material in a paper variant.
3. Be friendly - remember that other participants are not your rivals, they are actually in the same position as you are so try to help if you are asked to.
4. Calm down - more nervous you are, more nervous the kids will be. They feel everything. If they are afraid - they can't work well and you need their help.
5. Smile - always smile and it should be natural. Even if something is not right, at least you won't show it to everybody.