Looks like the Great Firewall or something like it is preventing you from completely loading www.skritter.com because it is hosted on Google App Engine, which is periodically blocked. Try instead our mirror:
This might also be caused by an internet filter, such as SafeEyes. If you have such a filter installed, try adding appspot.com to the list of allowed domains.
The first step for students to study Chinese grammar. It consists of two volumes, the first of which covers three units and the second covers four. Each unit is composed of four lessons. There are altogether 28 lessons. After learning the two volumes, the students will be able to speak more than 600 Chinese words and expressions and write over 400 Chinese characters.
Road to Success: Lower Elementary (成功之路起步篇) Written by Nan Yang. Published in 2008 by Beijing Language and Culture University Press. 132 pages. ISBN: 978-7561921623.