Instructional Website:
The Structure of English Words

Feedback and Suggestions:

The objectives are listed as questions which the learners will be able to answer after they completed the lessons on this site.
A site map is given with hyper-links to guide the learners. 
An introduction is given to this topic. It is quite thorough. After the introduction, the learners can take a pre-test before they actually get into the lessons.
The links on the exercises created by Hot Potatoes are well-linked, without any dead links.
The lessons are linked to each other. The introduction is also being mentioned in the first lesson. This shows that the designer has thoroughly planned on the contents of the instruction. He or she is not just putting everything together onto the site (or making a lot of outside links).
More graphics or pictures could be added to the site (those related to "words" or "language").