my 4-year old daughter likes them and is sad whenever they seem to get stuck in random places for no reason.
Even a bit of cardboard can do surprising tasks with a bit of help. Maybe a fun project. =3
https://www.youtube.com/watch?v=kn1tSPP0VF8
http://www.tweenbots.com/
Even a bit of cardboard can do surprising tasks with a bit of help. Maybe a fun project. =3
https://www.youtube.com/watch?v=kn1tSPP0VF8
http://www.tweenbots.com/