Every lesson plan needs an overall goal. For toddlers, this goal needs to be general, such as "introducing cooperation skills into the classroom."
The goal statement needs to be followed by specific objectives. "The toddlers will take turns watering the plant at the science center" is an example of an objective. This objective would work well with the goal stated in step 1. The toddlers will learn that by using cooperation, special things can be made or done.
Set up centers in the classroom and implement their use in the lesson plan, such as science, math, reading, role play, and arts and crafts centers, adding new activities to some of the centers every so often. Include their use in your lesson plans. For example, if you are learning about cooperation, add an art gallery to the art and crafts center. Each toddler can add his or her own picture to create a big art gallery. This activity will help enforce what can be accomplished when cooperation is used.
Include circle time in your lesson plan. Include new books about cooperation (or whatever you are learning about) and games you can play together.
Include recipes in your lesson plan, if you think it is appropriate to the goal of the lesson. Three ingredient recipes are probably sufficient, because nothing should be too complicated for toddlers. Making a simple s'more sandwich is enough to add interest and teach a lesson.