Plz answer ! answer the following question in a paragraph of at least 150 words. why should only the main ideas appear on a slide for a presentation?

Only the main ideas of the slide for a presentation should be there because  the point of presentation slides is not to replace you as the teacher, but to help your students understand and remember what you are teaching. Your slides are there to support what you are saying, not to say it for you. Slides are only there as a visual for your audience, and a checklist for you to see to help smoothen your presentation. Having walls of text can also be detrimental because audiences will not remember what you are saying. Having more photos, figures and icons work better as visual memory triggers. They help your students remember what it is that you're saying.  - Can you please answer my question if you are free?

1. read the following excerpt from franklin d. roosevelt's "fireside chat 19":

on the other side of the picture, we must learn also to know that guerilla warfare against the germans in, let us say serbia or norway, us; that a successful russian offensive against the germans us; and that british successes on land or sea in any part of the world strengthen our hands.

remember always that germany and italy, regardless of any formal declaration of war, consider themselves at war with the united states at this moment just as much as they consider themselves at war with britain or russia. and germany puts all the other republics of the americas into the same category of enemies. the people of our sister republics of this hemisphere can be honored by that fact.  

the true goal we seek is far above and beyond the ugly field of battle. when we resort to force, as now we must, we are determined that this force shall be directed toward ultimate good as well as against immediate evil. we americans are not destroyers — we are builders.

analyze the effectiveness of this excerpt. how does it function within the speech as a whole? how does the structure of the excerpt to convey the speech's purpose and key points? support your argument with evidence from the speech. (10 points)