@jayrandom They could do it with an adult, just like young children can participate in making dinner. They wouldn’t be able to do much but themselves.
There are two age ranges that matter for STEM toys. One range covers how advanced do they have to be to be able to follow the instructions and build the thing. The other range is how young do they have to be to find the thing interesting, challenging, and educational.
Some reviews have suggested that the age ranges don’t overlap. Those that find the concepts interesting are too young to follow the instructions as written. Those that are advanced enough to get the things working, don’t learn much from it or get much out of it.
If you enjoy spending hours with children putting together thanksgiving dinner, then these will probably work.
Here is another analogy. LEGO is a lot better at getting recommended ages better. If a 7 year old is really interested in a particular topic, for example backhoes, and LEGO sells a model backhoe with working pneumatic elements designed for 14+, would you and the 7 year old be happy together for 4 or 5 evenings building the model?