Middle School NGSS MS-ESS1-2 Gravity, Solar System, Galaxies Powerpoint $3.75Original Price $3.75 5.0(1) Climate and Weather MS-ESS2-6 $7.85Original Price $7.85 4.4(11) Human Impact on the Environment MS-ESS3-4 Print and Distance Learning $7.50Original Price $7.50 4.7(3) 5th Grade NGSS...