I read that children (in our case 4 and 2 years old) are not allowed at Yad Vashem (correct?). So we are looking for some child friendly activities to do while one of us is going to the memorial. Ideally they'd be somewhat near Yad Vashem and could keep us busy for as long as one needs to visit Yad Vashem. So far we are considering the Biblical Zoo and the Science Museum. Couple of questions:
How much time should one allow for each of these on average (Yad Vashem, Zoo, Science Museum)
Is the science museum a lot of hands-on or more looking/reading? We recently spent a full day at Phaeno which the children liked a lot.
Any other suggestions of things to do for children? Playgrounds could be fun as well, but I am not sure they'd spent as much time at a single playground.

