Explanation:
The United Nations (UN) is an intergovernmental organization that aims to maintain international peace and security, develop friendly relations among nations, achieve international cooperation, and be a centre for harmonizing the actions of nations. It is the largest, most familiar, most internationally represented and most powerful intergovernmental . in the world. The UN is headquartered on international territory in New York City, with its other main offices in Geneva, Nairobi, Vienna and The Hague.
Answer:
Print and blackboards/whiteboards
Explanation:
When objects are put in print you can revisit certain areas where you may be confused and ask clear questions about that part.
Blackboards and whiteboards allow you to see everything in front of you and point to certain areas.