I gave it to my son for his 6 years. I had to reread the instruction booklet to be sure to do everything in the right order. Many interesting thing but the record is actually not that clear because it theoretical explanations on the ecosystem are mixed with practical exercises to develop. My son and his big brother 7 years étaent qd them delighted practical activities (putting pebbles ground water etc.) without really understanding the theoretical information. We have planted the seeds yesterday and now we must wait until it grows! Then we play normally given various experiences. I still recommend this very fun activity that kids will enjoy for sure!