DC Filmation includes 3 episodes each of these cartoons for a total of 18 episodes.

 Justice League of America -  Superman, Green Lantern, Hawkman, Flash & Atom                                                     fight together for justice
Green Lantern  -  With the help of his friend Kairow, battle beings from other worlds.
Flash - Kid Flash makes an appearance in 2 of the 3 episodes.
Hawkman - With his trusty Hawk companion "Screel", battle Aliens from other worlds.
   Atom - This Mighty Might is transformed into the smallest hero to save the world from     
             criminals
   Teen Titans - Aqualad, Speedy, Kid Flash & Wonder Girl battle everything from Robots
                        to Dinosaurs