Plan 7-10 includes seven boxes of Microslide Lesson Sets. Ten copies of each Elementary title you choose are packaged in a sturdy storage box. Ten Microslide Viewers, One package of 50 Micromounts, one reproducible student worksheet per box, and a carrying case are included.Plan 15-10 includes 15 boxes of Microslide Lesson Sets. Ten copies of each Elementary title you choose are packaged in a sturdy storage box. Ten Microslide Viewers, One package of 50 Micromounts, one reproducible student worksheet per box, and a carrying case are included.