Curated OER
Necessary Nitrogen
Students view a video that presents the biogeochemical cycle of nitrogen. They compare types of soils and consider how different fertilizers affect soil composition.
Curated OER
Nature of Meteor Showers
Ninth graders describe, in general terms, the distribution of matter in space and
identify evidence for, and describe characteristics of, bodies that make up the solar system. They then investigate predictions about the motion,...
Curated OER
Scientific Theories
Ninth graders compare and contrast how different models can be used to represent scientific understandings. They evaluate the use of data when considering scientific claims. Students debate a variety of socio-scientific issues and the...