They're all coins, 2 minted in Philadelphia,2 minted in San Francisco. We all realize that you're quite young, and like to see young people getting involved in the hobby, but the questions you ask are just way too vague. You don't even list what denomination your coins are here. 1c, 5c, 10c, etc. You really should grab a couple books, especially a "Guide book of United States Coins" (Red Book), and read all you can. Everyone here is more than happy to answer questions, but they need to be questions that can be answered.
If you haven't already, please click on the link I posted. It's almost as good as the Red Book for providing basic information on US coins. And if you would spend a little bit of time reading through this link - Numismatic Resources - you'll be able to find out a whole lot more about coins. Give it a try, you'll have fun
Don't get me wrong, I'm not trying to be mean to you. I think it's great for kids your age to be interested in coins and collecting. It's just that to give you much info, as far as value and such, we need to see good pictures of the coins, get good descriptions etc.. That's why you should go to the library, even the library at school, and get some books on coins to read and study, plus the links GDJMSP provided. Starting at your age, if you read all you can, you'll be able to learn alot in no time. Anyway, the only way the coins you asked about will be worth much at all is if they are in MS condition. The 1942-s for example might be worth $10 or $15 in Unc. condition.
The 1942 s,a 1940 p,and a1944 s, assuming average circulated condition: are worth about 4 to 5 cents each. The a 1975 p is just worth face value. Good luck. find some more.
