Skill plan for the Redesigned STAAR - 8th grade
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Matter and energy
The student knows that matter is composed of atoms and has chemical and physical properties.
8.5.A: Describe the structure of atoms, including the masses, electrical charges, and locations, of protons and neutrons in the nucleus and electrons in the electron cloud.
8.5.A: Describe the structure of atoms, including the masses, electrical charges, and locations, of protons and neutrons in the nucleus and electrons in the electron cloud.
8.5.B: Identify that protons determine an element's identity and valence electrons determine its chemical properties, including reactivity.
8.5.B: Identify that protons determine an element's identity and valence electrons determine its chemical properties, including reactivity.
8.5.C: Interpret the arrangement of the Periodic Table, including groups and periods, to explain how properties are used to classify elements.
8.5.C: Interpret the arrangement of the Periodic Table, including groups and periods, to explain how properties are used to classify elements.
8.5.D: Recognize that chemical formulas are used to identify substances and determine the number of atoms of each element in chemical formulas containing subscripts.
8.5.D: Recognize that chemical formulas are used to identify substances and determine the number of atoms of each element in chemical formulas containing subscripts.
8.5.E: Investigate how evidence of chemical reactions indicates that new substances with different properties are formed and how that relates to the law of conservation of mass.
8.5.E: Investigate how evidence of chemical reactions indicates that new substances with different properties are formed and how that relates to the law of conservation of mass.
Force, motion, and energy
The student knows that there is a relationship between force, motion, and energy.
8.6.A: Demonstrate and calculate how unbalanced forces change the speed or direction of an object's motion.
8.6.A: Demonstrate and calculate how unbalanced forces change the speed or direction of an object's motion.
8.6.C: Investigate and describe applications of Newton's three laws of motion such as in vehicle restraints, sports activities, amusement park rides, Earth's tectonic activities, and rocket launches.
8.6.C: Investigate and describe applications of Newton's three laws of motion such as in vehicle restraints, sports activities, amusement park rides, Earth's tectonic activities, and rocket launches.
Earth and space
The student knows the effects resulting from cyclical movements of the Sun, Earth, and Moon.
8.7.A: Model and illustrate how the tilted Earth rotates on its axis, causing day and night, and revolves around the Sun, causing changes in seasons.
8.7.A: Model and illustrate how the tilted Earth rotates on its axis, causing day and night, and revolves around the Sun, causing changes in seasons.
8.7.B: Demonstrate and predict the sequence of events in the lunar cycle.
8.7.B: Demonstrate and predict the sequence of events in the lunar cycle.
The student knows characteristics of the universe.
8.8.A: Describe components of the universe, including stars, nebulae, and galaxies, and use models such as the Hertzsprung-Russell diagram for classification.
8.8.A: Describe components of the universe, including stars, nebulae, and galaxies, and use models such as the Hertzsprung-Russell diagram for classification.
The student knows that natural events can impact Earth systems.
8.9.B: Relate plate tectonics to the formation of crustal features.
8.9.B: Relate plate tectonics to the formation of crustal features.
8.9.C: Interpret topographic maps and satellite views to identify land and erosional features and predict how these features may be reshaped by weathering.
8.9.C: Interpret topographic maps and satellite views to identify land and erosional features and predict how these features may be reshaped by weathering.
Organisms and environments
The student knows that interdependence occurs among living systems and the environment and that human activities can affect these systems.
8.11.A: Investigate how organisms and populations in an ecosystem depend on and may compete for biotic factors such as food and abiotic factors such as quantity of light, water, range of temperatures, or soil composition.
8.11.A: Investigate how organisms and populations in an ecosystem depend on and may compete for biotic factors such as food and abiotic factors such as quantity of light, water, range of temperatures, or soil composition.
8.11.B: Explore how short- and long-term environmental changes affect organisms and traits in subsequent populations.
8.11.B: Explore how short- and long-term environmental changes affect organisms and traits in subsequent populations.
This document includes IXL skill alignments to the Redesigned STAAR. IXL provides skill alignments as a service to teachers, students, and parents. The skill alignments are not affiliated with, sponsored by, or endorsed by Texas Education Agency. IXL and IXL Learning are registered trademarks of IXL Learning, Inc. All other trademarks and registered trademarks and copyrights are the property of their respective owners.