FREE Federal Resources for Educational Excellence has resources for all subject areas and a well-stocked set of science specific resources. You will find items organized by Earth Science, Life Science, Applied Science, Physical Science, Space Science and Other. Each domain is then categorized into more specific areas of study. This seems like another “must add” to your science education bookmarks.
An example of one of the resources is an NIH Curriculum Supplement Series unit titled Cell Biology and Cancer for grades 9-12. Download the pdf of the teacher guide HERE.
Science for All 