I love learning toys. My children are ages 4 months, 2 years, 4 years, 7 years, and 11 years and we tried legos with the first 2 for many years to try and strenghten their fine motor skills. they were never into them, the just would get frusterated and give up. i know many other kids that enjoy legos but that was just not my kids. we decided to give knex a try when they were on a great sale, i think they are a bit pricy. We put together the first one as a family to get used to them and see how they worked. The next one was put together with out any help buy my boys! i think they are a bit easier...