1. One BIG downside is that it is not on CD; they mail a paper copy to you--which means you have to wait a week or so for it to arrive. When we rework the lesson we have to type it in manually instead of just cutting and pasting.
2. Some of the lessons have been simplistic so we sometimes need to beef it up a little. Sometimes the material is not enough to fill the time. Since they provide many more stations than we need, we sometimes combine the ideas from several stations to create a lesson long enough for the time.
3. A nice feature is that they give a number of different activities for each station. They generally have ones geared for younger kids, older kids, or all kids.
4. They could use more discussion quesions, especially ones that are more application-related.