Getting kids to help with cleaning isn't easy, especially in the beginning. Besides, how much help can you realistically expect from a child? The answer depends on the child's age.
Below I've listed examples of weekly kids chores that can generally be done by certain ages. Remember, the age recommendations are just that, recommendations.
Your tidy 11-year-old who has been cleaning his room since age 2 can probably tackle some of the chores listed for teenagers if safety isn't an issue.
Conversely, if you've been the maid for your 13-year-old since she was born, you might have to start her off with some of the simpler chores recommended for younger children. Once a child reaches a certain skill or age level, he can generally do the chores for his age group and those for the age groups below.
Here are the weekly kids chores that I feel should be done once a week. (Because these are a bit harder, I've exempted the 2-and-under crowd here.)