Discovery has created an entire list of topics with free lesson plans for history teachers. Each topic breaks down the lesson and teachers could use this as little or as much as they need.
A layout of activities, sources, and vocabulary that deals with the concept of World War II. It also includes the goals that each activity accomplishes so teachers can gauge what they have and have not covered.
A whole lesson plan with discussion topics and questions for your students and an activity for them to help them understand the concept of national security.
This website is a store full of classroom games and activities. Although you must pay for them, you may be able to get your schools support in the classroom!