Free, but you must register to access and upload simulations/lesson plans.Content is devoted to math and all disciplines of science. Developed for grade levels K17.

Digital apps that support Bloom's Taxonomy. Works with Apple and Android.

National Earth Science Teachers Association. Free website filled with videos, lesson plans, activities which are leveled for beginner, intermediate, and advanced learners.

Instructional assessments and huge assortment of rubrics. Including state standards, common core, PBL, technology, student presentations, etc...

Every NGSS standard has three dimensions: disciplinary core ideas (content), and engineering practices, and cross-cutting concepts. Currently, most state and district standards express these dimensions as separate entities, leading to their separation in both instruction and assessment. The integration of rigorous content and application reflects how science and engineering is practiced in the real world.