Grant Smith 
Dragons of Power [EPUB ebook] 

Gravel, a young Earth Dragon, was abandoned by his father. A large, grumpy Fire Dragon named Flame had found Gravel as an egg, and brought him to the Fire Dragon Kingdom. Since Gravel was the only Earth Dragon in that entire kingdom, he got bullied a lot! Luckily, he could seek refuge in his classroom, where his teacher, Mr. Ash, would protect him. Even Flame was cruel to Gravel but finally, he had made a friend. A young, smart, and pretty Fire Dragon named Ember. Finally, Gravel had decided to leave this horrible kingdom, and find the truth about his father. Did he really leave him? Was everything Flame had told Gravel true? Could he and Ember ever find the burning truth he was looking for?