Well, here's the official answer...
- Learning Targets are statements of what students will know and be able to do at the end of the lesson (two lessons at most).
- The agenda is the list of activities you have planned to develop those skills or show their progress toward them.
Think of it as learning targets being the destination, and the agenda as the list of vehicles you're using to get there.
To the right is an example from a ninth grade Earth/Environmental Science class: