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  • Science
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  • Matter and its properties

Science.2.6.B

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The student is expected to

conduct a descriptive investigation to explain how physical properties can be changed through processes such as cutting, folding, sanding, melting, or freezing; and

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.”

  • Overview
  • Alignments
Side-by-Side 

SCIENCE.2.6.B — Vertical Alignment

Vertical alignment shows student expectations in the same subject area at different grade levels that are related to or build upon one another.

Previous grade
S.1.6.B

explain and predict changes in materials caused by heating and cooling; and

S.1.8.A

investigate and describe applications of heat in everyday life such as cooking food or using a clothes dryer; and

S.1.8.B

describe how some changes caused by heat may be reversed such as melting butter and other changes cannot be reversed such as cooking an egg or baking a cake.

S.2.6.B

conduct a descriptive investigation to explain how physical properties can be changed through processes such as cutting, folding, sanding, melting, or freezing; and

S.3.6.C

predict, observe, and record changes in the state of matter caused by heating or cooling in a variety of substances such as ice becoming liquid water, condensation forming on the outside of a glass, or liquid water being heated to the point of becoming water vapor (gas); and

S.6.6.E
identify the formation of a new substance by using the evidence of a possible chemical change, including production of a gas, change in thermal energy, production of a precipitate, and color change.
S.7.6.C
distinguish between physical and chemical changes in matter;
S.8.6.B
use the periodic table to identify the atoms involved in chemical reactions;
IPC.8.A
investigate how changes in properties are indicative of chemical reactions such as hydrochloric acid with a metal, oxidation of metal, combustion, and neutralizing an acid with a base;
CHEM.9.B
differentiate among acid-base reactions, precipitation reactions, and oxidation-reduction reactions;
CHEM.12.D
predict products in acid-base reactions that form water; and
CHEM.13.C
classify processes as exothermic or endothermic and represent energy changes that occur in chemical reactions using thermochemical equations or graphical analysis; and
Next grade

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.

Processes such as cutting, folding, sanding, melting, or freezing create patterns of change in size, shape, and state of matter (solid or liquid.)

Cause-and-effect relationships

Cause-and-effect relationships are relationships between two or more variables or phenomena whereby one variable or event leads to a predictable response. Events have causes—sometimes simple, sometimes multi-faceted.

As processes of change are applied (cause), the physical properties of the materials are changed (effect).

Flow of energy and cycling of matter through systems

Energy flows within a system or between systems through transfers and transformations. Matter is cycled within systems through physical and chemical processes. It is important to note that in kindergarten–grade 2, the foundation of flow of energy and cycling of matter is built by identifying the forms of energy and properties of matter. In grades 3–8, students learn that matter and energy are conserved, changing forms but maintaining quantities. 

Changes in material caused by heating come from energy flowing into the materials. Changes caused by freezing come from energy being removed from the materials.

Stability and change

Stability describes a system that does not change at the observed scale. In a stable system, a small disturbance will die out and the system will return to a stable state. Change in the system can come from modifying a factor or condition.

In most instances, materials remain in an unchanging, stable state. However, modification through a physical change (such as cutting, folding, sanding, melting, or freezing) can change one or more of the material's physical properties.

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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Math

Math.2.1.A apply mathematics to problems arising in everyday life, society, and the workplace

Math.2.1.B  use a problem-solving model that incorporates analyzing given information, formulating a plan or strategy, determining a solution, justifying the solution, and evaluating the problem-solving process and the reasonableness of the solution

Math.2.1.C select tools, including real objects, manipulatives, paper and pencil, and technology as appropriate, and techniques, including mental math, estimation, and number sense as appropriate, to solve problems

Math.2.1.F analyze mathematical relationships to connect and communicate mathematical ideas

English Language Arts and Reading

ELAR.2.1.B follow, restate, and give oral instructions that involve a short, related sequence of actions

ELAR.2.1.D work collaboratively with others by following agreed‐upon rules for discussion, including listening to others, speaking when recognized, making appropriate contributions, and building on the ideas of others

ELAR.2.1.E develop social communication such as conversing politely in all situations

ELAR.2.13.A  generate questions for formal and informal inquiry with adult assistance

ELAR.2.13.E demonstrate understanding of information gathered

ELAR.2.13.G use an appropriate mode of delivery, whether written, oral, or multimodal, to present results

Technology Applications

TA.2.1.A identify and communicate a problem or task and break down (decompose) multiple solutions into sequential steps

TA.2.1.C analyze a plan with adult assistance that outlines the steps needed to complete a task

TA.2.1.D create and troubleshoot simple algorithms (step-by-step instructions) that include conditionals such as if-then statements as they apply to an everyday task

TA.2.3.A demonstrate personal skills and behaviors, including effective communication, following directions, and mental agility, needed to implement a design process successfully

TA.2.5.A identify and collect non-numerical data, such as weather patterns, preferred reading genres, and holidays

TA.2.10.A  select and use a variety of applications, devices, and online learning environments to create and share content

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