The materials and methods (procedures) in an experiment should be present and complete. In addition:
1. They should be numbered
2. They should include amounts of each item needed
3. each step should be written as a complete sentence
4. All of the above
PLEASE HELP!!!!!!!
The correct answer is 4. All of the above.
In an experiment, the materials and methods (procedures) should be present and complete. This includes numbering each step and providing the amounts of each item needed. Each step should also be written as a complete sentence.