Joan Holub

Look at the history of Mars, summarizes our current knowledge, based in part on the Mariner and Viking space probes.

Different children spend time with their fathers, playing, cooking, pretending, and having a wonderful time.

Discusses what causes shadows, how they change depending on placement of the light source, and ways to have fun making shadows.

When Maria finds the lost key to the city playground, the entire population joins in the fun.

While pondering how to buy her mother a birthday present with no money, Deena find a penny and follows a process of discovery about how pennies add up to nickels, which add up to dimes, all the way up to four quarters making a dollar.

Two quests down, one to go! Then hopefully, King Eurystheus will finally forgive Hercules and not declare war on Mount Olympus. Zeus and hercules have acquired the Amazon warrior queen's golden belt and the Hydra's scale. all that's left is to bring Cerberus, the three-headed guardian of the Underworld--gulp!--to King Eurystheus. Hopefully, Athena can get Hades to loan them Cerbrus until the quest is completed. But when the trio arrives at the Underworld,...

Despite the warnings of her friends at Mount Olympus Academy, Persephone befriends bad-boy Hades, but following her mother's advice to "go along to get along" complicates her relationships with all of them.

Ten-year-old Zeus is kidnapped by the terrible Titans, merciless giants who enjoy snacking on humans, and when in self-defense he pulls a magical thunderbolt from a stone he begins an adventure to rescue his fellow Olympians from the evil Cronus.

"Under the Titan Hyperion's rule, the sun is burning even brighter than normal, and scorching everything in northern Greece--including the villagers! The Olympians are forced to play an un-fun game of Dodge the Sunbursts as Hyperion hurls giant fireballs that could fry them up! What's worse, it looks like a familiar foe, Cronus, is hot on Zeus, Poseidon, and Hades's trail. Armed with some clues, they set out to figure out why Hyperion has been making...