One of the founders of modern quark theory employs minimal mathematics and nontechnical terms to traverse the eons and bring readers within the first millisecon

Over 200 animal songs for young children.

Using familiar tunes, songs cover popular thems such as weather, apples, dinosaurs, animals, neighborhood, and many many more.

Created from previously-published material in the existing Piggyback Songs Series, this title features songs that focus on events and activities young children

Over 250 holiday songs for young children covering over fifteen separate holidays.