Search Engines for Kids

Since the Public Library version of AskAway has been closed, we have been receiving increased numbers of questions from high school and elementary school students.
Having heard so much about "freedom of information", I thought we'd be able to use Google to do the searches, but I've discovered that the students' reading level can be really prohibitive when relying on a standard search engine.
Therefore, I've found some lists of kids' search engines that we can use to help students with their questions. Hopefully we can take these students to a kids' search engine and help them search it just as we would do with a post-secondary patron.
Lists of recommended search engines:
SearchEngineWatch: Kids' Search Engines
Kids' Tools for Searching the Internet
Search Engines and Directories for Children and Education
Google Directory: Kids and Teens
Google Directory: Homework Help
-Niki