Implementing District Standards
NGSS has four performance expectations (PE) for Grade 2 Earth & Space Sciences. They are:
2-ESS1-1. Use information from several sources to provide evidence that Earth events can occur quickly or slowly.
Throughout this unit, students are using text, online mapping (Google Earth), and physical models to represent the cause and effect relationships of water and land.
2-ESS2-1. Compare multiple solutions designed to slow or prevent wind or water from changing the shape of the land.
Students investigate the effects of various materials on fluvial landforms, such as trees and man made obstructions (dams), to change how water shapes the land at the community stream table.
2-ESS2-2. Develop a model to represent the shapes and kinds of land and bodies of water in an area.
In lessons one and two, students learn about the names for different types of landforms. In lesson two, students also make a physical model of each landform out of play dough.
2-ESS2-3 Obtain information to identify where water is found on Earth and that it can be solid or liquid.
Students use Google Earth as one resource to investigate major bodies of water and resulting physical landforms. The stream table also helps students identify that some water percolates through the soil until saturated, then runoff occurs as water is carried by gravity to an accumulation point.