A brave, intimate, beautifully crafted memoir by a survivor of the tsunami that struck the Sri Lankan coast in 2004 and took her entire family. On December 26,

A boy befriends a wave at the seashore and brings her home.

Brilliantly written undergraduate-level text emphasizes optics, acoustics; covers transverse waves on a string, acoustic plane waves, boundary-value problems, m

As Thomas the Tank Engine travels the railway, he says "Hi" to all the friends he sees along the way.

Step-by-step instructions show how to make models from simple to amazing, including moving figures and clever joke pieces.