Smithsonian Science for the Classroom is designed to be a comprehensive core science program for grades K-5. 

At each grade, the NGSS Performance Expectations (PEs) are arranged into four"bundles" that correspond to four modules. 

The modules are further organized into four topical "strands": Life Science, Earth and Space Science, Physical Science, and Engineering Design. 

Each grade level will teach one module each quarter. The modules and the corresponding Google Classrooms are linked to each grade level below.