Student or Learner
Does all always follow by the is?
1) What are all children doing?
All the children is eating.
2) . How is your family member?
All is fine, thank you.
3) All the toys is made of wood.
In each of your examples, the word should be are, not is.
When the word all is used to represent countable things, like children, family members, or toys, then we used are. If the word all stands for uncountable things, as in, for example, a conversation like, "How is everything?" "All is well.", then we use is.
"All the world is but a stage..."
"All the city is abuzz with the news..."
All America is celebrating July 4th.
All Americans are celebrating July 4th.
(All) Women are from Venus, (all) Men are from Mars.