The experiments are, as far as we were able to try so far, really great and suitable for children. The age "from 8" I think is right, smaller explorers need some help from the parents.
The experimentation makes this but also fun :-)
The accompanying booklet (a book, it is not) shows the experiments in simple images and with appropriate explanations and examples.
A well-rounded so ?? No, unfortunately not all. When we took the in itself quite labbrigen box from the shipping carton, we thought that anything was broken, but it sounded very worrying if you took the box in his hand. The answer then after opening: all the utensils lying around carelessly in a box, it is sorted or not housed in smaller compartments. As we have already ordered another experiment kits made by Kosmos, which is better resolved. Somehow everything looks, with the brochure lying on top but very carelessly and one must first bring order to the chaos.
A bargain, as the values of other reviewer writes, I do not find the box, as it now really does not contain high-quality parts. With appropriate packaging I would certainly have assigned four or even five stars, so there are only three, with an appeal to the manufacturer to offer here with little effort better packaging.