2020 6-ESS2-2

Page history last edited by Heather Johnston 5 years, 2 months ago

The Oklahoma Academic Standards for Science (OAS-S) are three-dimensional performance expectations representing the things students should know, understand, and be able to do to be proficient in science and engineering. Performance expectations are considered standards and include a science and engineering practice (indicated in blue and represent everyday skills of scientists and engineers), disciplinary core ideas (represented in orange and represent science ideas used by scientists and engineers), and a crosscutting concept (indicated in green and represent ways of thinking like scientists and engineers).

Each dimension in the OAS-S grows in complexity and sophistication across the grades. To learn more about the prior knowledge and skills students have developed (or future knowledge/skills) associated with that specific dimension, each section in the standard below is hyperlinked to that specific vertical learning progression page.

6th Grade (6) Earth's Systems
6.ESS2.2 Construct an explanation based on evidence for how geoscience processes have changed Earth’s surface at varying time and spatial scales.
Clarification Statement: Emphasis is on how processes change Earth’s surface at time and spatial scales that can be large (such as slow plate motions or the uplift of large mountain ranges) or small (such as rapid landslides or microscopic geochemical reactions), and how many geoscience processes usually behave gradually but are punctuated by catastrophic events (such as earthquakes, volcanoes, and meteor impacts). Examples of geoscience processes include surface weathering and deposition by the movements of water, ice, and wind. Emphasis is on geoscience processes that shape local geographic features, where appropriate.
Assessment Boundary: Assessment does not include identification or naming of specific events.
Science and Engineering Practices	Disciplinary Core Ideas	Crosscutting Concepts
Constructing Explanations Construct an explanation based on valid and reliable evidence obtained from a variety of sources (including students’ own investigations, models, theories, simulations, peer review) and the assumption that theories and laws that describe the natural world operate today as they did in the past and will continue to do so in the future.	Earth's Materials and Systems The planet’s systems interact over scales that range from microscopic to global in size; these interactions have shaped Earth’s history and will determine its future. The Roles of Water in Earth's Surface Processes Water’s movements, both on the land and underground, cause weathering and erosion, which change the land’s surface features and create underground formations.	Scale, Proportion, and Quantity Time, space, and energy phenomena can be observed at various scales, using models to study systems that are too large or too small.
Connections to other Performance Expectations in Grade 6
Energy Flow and Earth Processes