Answer:
You could draft a piece of legislation then meet with the Representative or her staff and convince them to submit the legislation.
Step-by-step 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.