Lizzie is giving a speech on the Great Barrier Reef and has many images to use as visual aids. When she gets to the classroom, she sees that the lectern is directly in front of the projection screen and cannot be moved. What is the best way for Lizzie to handle the situation

Lizzie should use a pointer  and move to one side of the screen

Explanation:

If the lectern is unmovable ,Lizzie should stand to the side of the screen and use a pointer when discussing the images to avoid further obstructing them.

By doing so she would not obstruct the audience and can easily use the pointer to explain part of the images

could you go a bit more in depth with you question? it's quite hard to understand. as soon as you do that i will be glad to : )