How would you find latitude and longitude without using a globe or the internet? Please help

If you are plotting long distances are varying courses, the best you could do is plot these on a Equidistant Projection, and the usual of these is the Miller Equidistant Projection. I doubt if you have seen these in school.
Perhaps your teacher wants you to plot the distances on a standard Mercator Projection, forgetting that over long distances this map is terribly wrong as one goes North or South.
I have contacted a geography teacher to help you on this question, as I am at a total loss why your teacher gave you an impossible assignment (without a globe or a background in spherical trig). If the distances you cited had been smaller, say 120 miles, etc, the Mercator projection (flat map) would have been close to accurate.
Sorry for the confusion.

The best way is to use a GPRS.

You can use a paper map to find longitude and latitude without using a globe or the Internet.

Check these sites for information.

http://academic.brooklyn.cuny.edu/geology/leveson/core/linksa/latlong_menu.html

http://www.allaboutspace.com/geography/world/cylatlongoutlinemap/

http://www.allaboutspace.com/geography/world/cylatlongoutlinemap/activity.shtml

http://worldatlas.com/aatlas/imageg.htm

To find latitude and longitude without a globe or the internet, you can use a paper map. Here are the steps to find latitude and longitude using a paper map:

1. Look for a map that includes latitude and longitude lines. These lines are usually marked along the edges of the map or in a grid pattern.

2. Locate the point you are interested in on the map. For example, if you want to find the latitude and longitude of a particular city, find that city on the map.

3. Find the latitude lines on the map. These lines run horizontally across the map and are labeled with degrees and minutes. The equator is usually marked as 0 degrees latitude.

4. Determine the latitude of the point you are interested in by estimating the distance between the equator and the point on the map. Each latitude degree represents a distance of about 69 miles (or 111 kilometers) in real-world measurements.

5. Find the longitude lines on the map. These lines run vertically across the map and are labeled with degrees and minutes. The prime meridian (0 degrees longitude) is usually marked.

6. Determine the longitude of the point you are interested in by estimating the distance between the prime meridian and the point on the map. Each longitude degree represents a distance of about 69 miles (or 111 kilometers) at the equator, but this distance decreases as you move towards the poles.

It is important to note that using a paper map to find latitude and longitude may not be as accurate as using a globe or the internet, but it can give you a rough estimate of coordinates.