There are lot of stupid educational things on amazon, where they are trying to cheat you. For example Einstein box, etc. which has very little activities but exorbitant pricing. But this is amazing book with so many activities and such economical pricing. Also the activities are good for 3-5/6 year old kids. My kid is 4.5 years old and with some help he can do most of the activities, except word/sentence forming and spellings.