Edith Hamilton is the classicist's classic. Her Mythology book was a favorite of mine as a child. It reads like short stories and works well for kids who want a deeper understanding of Greek mythology. For ages 9 and up.
In this FREE research assignment students research different gods, goddesses, creatures and humans from Greek Mythology. I had my students work individually at home and I had them pick names from a hat. You can have them work in groups and do it in class using laptops if you wish. Some of my students prepared PowerPoint presentations, some made posters and others just made a speech. The CCSS for grades 6-12 are included.
Scátthach, the Scottish Warrior Goddess: According to P.Monaghan Scátthach was an Irish Heroine who Lived on Island Made For Her; Isle of Skye in Scotland. She Taught Warriors but in order to get to her they had to pass the Bridge of the Cliff, an extremely challenging task (that even brought Cúchulann to brink as he performed his salmon leap to gain entry).