Test 3 - Amount of Work Used

This can be a little gray - but common sense may prevail.
The amount of material used cannot be a "significant" amount. So what is the gray area? It's the definition of significant. Common sense says what?
Is 100% of a work significant?
Is 75% of a work significant?
Is 50% of a work significant?
Is 30% of a work significant?
Is 5 % of a work significant?

If you had to make a generalization, what would you consider significant?

Simpson, C. (2005). Copyright for Schools: A Practical Guide, fourth edition. Worthington, Ohio: Linworth Publishing, Inc.