A student expectation is directly related to the knowledge and skills statement, is more specific about how students demonstrate their learning, and always begins with a verb. Student expectations are further broken down into their component parts, often referred to as “breakouts.”
analyze and interpret elemental data, including atomic radius, atomic mass, electronegativity, ionization energy, and reactivity to identify periodic trends.
construct models using Dalton's Postulates, Thomson's discovery of electron properties, Rutherford's nuclear atom, Bohr's nuclear atom, and Heisenberg's Uncertainty Principle to show the development of modern atomic theory over time;
describe the structure of atoms and ions, including the masses, electrical charges, and locations of protons and neutrons in the nucleus and electrons in the electron cloud;
Recurring themes and concepts — Connections to the content
Recurring themes and concepts provide a connective structure for scientific ideas across disciplines. The connection(s) below show some ways that teachers can help students understand how the content they are learning fits into the broader understanding of science. These connections do not represent all possible connections that might be made but highlight some that are appropriate for this grade level.
Patterns
Patterns are regular sequences that can be found throughout nature.
Classifying a substance as an element or a compound relies on the pattern of the number and identity of the elements present. For example, compounds will always have more than one type of element. If there is only one type of element present, even if there are more than one of them, it is not a compound. O2 is made up of two oxygen atoms and is an element, not a compound.
Model the interdependence and parts of a system
A system is a whole made of parts that work together. It has components and boundaries. It can interact with or be part of other systems.
Compounds are made up of different elements, and atoms (parts) are the building blocks of compounds. Atoms interact (bond) to create compounds.
Cross-curricular Connections
The cross-curricular connections are designed to help educators make content connections between the science TEKS and math, English language arts and reading, social studies, and technology applications. The standards below illustrate alignment between grade level content areas which may help educators develop cross-curricular lessons. These connections do not represent all possible connections that might be made.
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English Language Arts and Reading
ELAR.7.5.F make inferences and use evidence to support understanding
ELAR.7.5.G evaluate details read to determine key ideas
ELAR.7.5.H synthesize information to create new understanding