A collection of original songs, games, and activities designed to teach children to match pitches and sing in tune. A CD is included to initially present the so

Newbery Honor Book New York Times Bestseller This impassioned, uplifting, and virtuosic tour de force from a treasured storyteller follows three children, in th

The acclaimed author of A Tour of the Calculus and The Infinite Ascent offers an enlightening and enthralling tour of the basics of mathematics, and reveals a w

Lift the letters and discover an expression for every mood.

One䓷oThree䒡ssafras! (LEVEL 1: Number Order) It′s the Lumpkin family reunion, and Uncle Howie is ready with his camera. All the cousins have to line up by