Did anyone try them? And how effective are they? Our son is 4 yo and we're thinking about trying them for learning math and alphabet. Would be grateful for sharing with your experience!

Children adore various games that's why it's th easiest and most effective method of their learning. Modern virtual games are un upgrade of old classic ones and yeah, they're very effective too because are based on same professional methods of teaching as live games. Besides using of gadgets for them creates an additional motivation in children for learning because all of them adore such devices They usually have good quality in case of storyline and characters too, quest genre is very popular in this case which makes the process of playing very interesting. And there are so many teaching games and apps now for all ages including the subjects you mentioned. For example, I really recommend you to visit ABCya! resource, there's a great variety of good games and other useful tools for learning alphabet. In case of math such games as Bugs and Numbers, Cool4MathKids and Dinosaur Park Math are considere as very good ones. For alphabet very often Fish School HD, Alphabet Antics, Zebrainy ABC Wonderlands https://itunes.apple.com/app/apple-store/id1165324239?mt=8 and Numberlys are recommended as effective ones too. Such games can also be helpful for developing memory, motor and creative skills, focus etc. But anyway they shouldn't replace totally all other methods of teaching and even with them parents should control general time with gadgets because children very easy get an addiction for them

We're they downloaded from any site?

Thanks for your response! For the second one, what did you mean about that downloading?