Get a WHOLE SCHOOL YEAR worth of thematic units designed specifically for students with disabilities. You will get 20 units in all. Each unit will focus on the development of ELA, Math & Language Development skills. If you bought these 20 units individually, it would cost you $140.
Students in kindergarten, first grade, and second grade will absolutely eat up a thematic study of spiders! Check out this fantastic post for cross-curricular activities for teaching about spiders to elementary students - the perfect way to tie in reading, math, science, and art!