Lat Long Converter from/to Decimal Degrees to/from Degrees Minutes Seconds
FCC Smartphone Security Checker - Not really a "checker", but it generates checklists to follow for all popular smart phones.
Convert latitude and longitude coordinates between Deg/Min/Sec, Degrees/Minutes, and Decimal Degrees.
Conversion calculator - degrees, minutes, seconds to decimal degrees - Calculators - AADC
How to Convert Decimal Degrees Into Degrees, Minutes, Seconds
Conversion calculator - decimal degrees to degrees, minutes,seconds - Calculators - AADC
Changing projections from Decimal Degrees to a Projected Coordinate System in GPS garmin
FCC.gov has a link on the bottom left to click to educate kids. It's also broken out for grades k - 3, 4 - 8, 9 - 12, and parents' place.
how to convert the X Y coordinates from (degree minute second) DMS to (decimal degrees) in Excel
Degrees Minutes Seconds to/from Decimal Degrees | Federal Communications Commission