- Here's what the student should be able to do by the end
- Etc
The introduction should discuss the premise, or scenario of the lab. It should set the stage for the work the students will be doing.
Instructions should be a list of steps to take when solving the lab.
Instructions should be be specific. Students shouldn't have to make assumptions about what to do based on the instructions, they should immediately know.
Instructions should be written in order of how to approach the lab. If you need to build a class before you can define any methods, the instructions should lead the student to build the class first.