Research units are unit studies that teach kids HOW to learn. In each research unit we have lessons with different prompts and questions and it's up to the kids to find the answers. The nice thing about this kind of format it is that you can suit it to fit the age and skill level of your children. If you have younger kids, do the research together. With older kids, help them find resources but let them see if they can do the research themselves. These units are easy to adapt to a variety of age levels, with my own children I just expect them to do more or less research on their own or write more or less depending on their age/skill level.