All of the major high school and college topics are covered at top20education.com.
Top20kids.com is a good resource for K-3 and preschoolers. The websites are also
formatted for touch screens like the iPad and other mobile devices. A truly multiple search
engine is included as an alternative to the directory. Top20appsforkids.com is another resource
for parents. These websites try to address the problem of information overload by selecting just the top 20 open access websites for each educational topic.