If you wanted to see a law making it mandatory for all 10th grade students to receive a computer from the government for educational purposes,

you would have to convince your local state senator that it was a good idea
you could meet with your house of representative and ask him to buy all 10th graders computers
you could draft a piece of legislation then meet with the representative or her staff and convince them to submit the legislation
you would introduce the legislation on the senate floor and hope your state's national senator likes it and votes for it

You could draft a piece of legislation then meet with the Representative or her staff and convince them to submit the legislation.

Explanation:

To make a law mandatory for all 10th grade students to receive a computer a proposal should be made and introduced in a bill by a member of the Congress, you cannot introduce it by yourself to the House of Representative or Senate, only a member of the Congress can support the bill and introduce it.

Only after both branches have voted for it the bill will go to the President, who can sign it as a law. After it became law the government will provide it, your House of Representative cannot buy the computers himself.

The correct action is you could draft a piece of legislation then meet with the Representative or her staff and convince them to submit the legislation.