The NEED Project provides an extensive library of standards-based curricula for teachers of grades K-12. Examples of the many resources teachers can download are: free lessons on wind energy in four levels, hands-on solar kits, energy infobooks in four levels, energy efficiency and conservation lesson plans, curricula on saving energy for students and families, and transportation fuels lessons. Several NEED lessons also feature connections to language arts, geography and economics. Lessons are available for all grade levels K-12 and adhere to National Science Education Standards.