Child observes, investigates describes, and discusses properties and characteristics of common objects.

K: TEK K.6
Matter and its properties. The student knows that objects have physical properties that determine how they are described and classified. The student is expected to identify and record observable physical properties of objects, including shape, color, texture, and material, and generate ways to classify objects

1: TEK 1.6ABC
Matter and its properties. The student knows that objects have physical properties that determine how they are described and classified. The student is expected to:

(A) classify objects by observable physical properties, including, shape, color, and texture, and attributes such as larger and smaller and heavier and lighter;

(B) explain and predict changes in materials caused by heating and cooling; and

C) demonstrate and explain that a whole object is a system made of organized parts such as a toy that can be taken apart and put back together.

2: TEK 2.6ABC
Matter and its properties. The student knows that matter has physical properties that determine how it is described, classified, and used. The student is expected to:

(A) classify matter by observable physical properties, including texture, flexibility, and relative temperature, and identify whether a material is a solid or liquid;

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

(C) demonstrate that small units such as building blocks can be combined or reassembled to form new objects for different purposes and explain the materials chosen based on their physical properties.

3: TEK 3.6ABCD
Matter and energy. The student knows that matter has measurable physical properties that determine how matter is identified, classified, changed, and used. The student is expected to: 
(A) measure, test, and record physical properties of matter, including temperature, mass, magnetism, and the ability to sink or float in water;
(B) describe and classify samples of matter as solids, liquids, and gases and demonstrate that solids have a definite shape and that liquids and gases take the shape of their container;
(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
(D) demonstrate that materials can be combined based on their physical properties to create or modify objects such as building a tower or adding clay to sand to make a stronger brick and justify the selection of materials based on their physical properties.

4: TEK 4.6ABC
Matter and energy. The student knows that matter has measurable physical properties that determine how matter is identified, classified, changed, and used. The student is expected to: 
(A) classify and describe matter using observable physical properties, including temperature, mass, magnetism, relative density (the ability to sink or float in water), and physical state (solid, liquid, gas); 
(B) investigate and compare a variety of mixtures, including solutions that are composed of liquids in liquids and solids in liquids; and 
(C) demonstrate that matter is conserved when mixtures such as soil and water or oil and water are formed.

5: TEK 5.6ABCD
Matter and energy. The student knows that matter has measurable physical properties that determine how matter is identified, classified, changed, and used. The student is expected to: 
(A) compare and contrast matter based on measurable, testable, or observable physical properties, including mass, magnetism, relative density (sinking and floating using water as a reference point), physical state (solid, liquid, gas), volume, solubility in water, and the ability to conduct or insulate thermal energy and electric energy; 
(B) demonstrate and explain that some mixtures maintain physical properties of their substances such as iron filings and sand or sand and water;
(C) compare the properties of substances before and after they are combined into a solution and demonstrate that matter is conserved in solutions; and
(D) illustrate how matter is made up of particles that are too small to be seen such as air in a balloon.