Current through Reg. 49, No. 38; September 20, 2024
(c) Introduction.
(1) Career and technical education
instruction provides content aligned with challenging academic standards,
industry-relevant technical knowledge, and college and career readiness skills
for students to further their education and succeed in current and emerging
professions.
(2) The Science,
Technology, Engineering, and Mathematics (STEM) Career Cluster focuses on
planning, managing, and providing scientific research and professional and
technical services, including laboratory and testing services, and research and
development services.
(3)
Engineering Science is an engineering course designed to expose students to
some of the major concepts and technologies that they will encounter in a
postsecondary program of study in any engineering domain. Students will have an
opportunity to investigate engineering and high-tech careers. In Engineering
Science, students will employ science, technology, engineering, and
mathematical concepts in the solution of real-world challenge situations.
Students will develop problem-solving skills and apply their knowledge of
research and design to create solutions to various challenges. Students will
also learn how to document their work and communicate their solutions to their
peers and members of the professional community.
(4) Science, as defined by the National
Academy of Sciences, is the "use of evidence to construct testable explanations
and predictions of natural phenomena, as well as the knowledge generated
through this process." This vast body of changing and increasing knowledge is
described by physical, mathematical, and conceptual models. Students should
know that some questions are outside the realm of science because they deal
with phenomena that are not currently scientifically testable.
(5) Students are expected to know that:
(A) hypotheses are tentative and testable
statements that must be capable of being supported or not supported by
observational evidence. Hypotheses of durable explanatory power that have been
tested over a wide variety of conditions are incorporated into theories;
and
(B) scientific theories are
based on natural and physical phenomena and are capable of being tested by
multiple independent researchers. Unlike hypotheses, scientific theories are
well established and highly reliable explanations, but they may be subject to
change as new areas of science and new technologies are developed.
(6) Scientific inquiry is the
planned and deliberate investigation of the natural world using scientific and
engineering practices. Scientific methods of investigation are descriptive,
comparative, or experimental. The method chosen should be appropriate to the
question being asked. Student learning for different types of investigations
include descriptive investigations, which involve collecting data and recording
observations without making comparisons; comparative investigations, which
involve collecting data with variables that are manipulated to compare results;
and experimental investigations, which involve processes similar to comparative
investigations but in which a control is identified.
(A) Scientific practices. Students should be
able to ask questions, plan and conduct investigations to answer questions, and
explain phenomena using appropriate tools and models.
(B) Engineering practices. Students should be
able to identify problems and design solutions using appropriate tools and
models.
(7) Scientific
decision making is a way of answering questions about the natural world
involving its own set of ethical standards about how the process of science
should be carried out. Students should be able to distinguish between
scientific decision-making methods (scientific methods) and ethical and social
decisions that involve science (the application of scientific
information).
(8) Science consists
of recurring themes and making connections between overarching concepts.
Recurring themes include systems, models, and patterns. All systems have basic
properties that can be described in space, time, energy, and matter. Change and
constancy occur in systems as patterns and can be observed, measured, and
modeled. These patterns help to make predictions that can be scientifically
tested, while models allow for boundary specification and provide a tool for
understanding the ideas presented. Students should analyze a system in terms of
its components and how these components relate to each other, to the whole, and
to the external environment.
(9)
Students are encouraged to participate in extended learning experiences such as
career and technical student organizations and other leadership or
extracurricular organizations.
(10)
Statements that contain the word "including" reference content that must be
mastered, while those containing the phrase "such as" are intended as possible
illustrative examples.
(d) Knowledge and skills.
(1) The student demonstrates professional
standards/employability skills as required by business and industry. The
student is expected to:
(A) demonstrate
knowledge of how to dress appropriately, speak politely, and conduct oneself in
a manner appropriate for the profession;
(B) show the ability to cooperate,
contribute, and collaborate as a member of a group in an effort to achieve a
positive collective outcome;
(C)
present written and oral communication in a clear, concise, and effective
manner;
(D) demonstrate
time-management skills in prioritizing tasks, following schedules, and
performing goal-relevant activities in a way that produces efficient results;
and
(E) demonstrate punctuality,
dependability, reliability, and responsibility in performing assigned tasks as
directed.
(2) The
student, for at least 40% of instructional time, asks questions, identifies
problems, and plans and safely conducts classroom, laboratory, and field
investigations to answer questions, explain phenomena, or design solutions
using appropriate tools and models. The student is expected to:
(A) ask questions and define problems based
on observations or information from text, phenomena, models, or
investigations;
(B) apply
scientific practices to plan and conduct descriptive, comparative, and
experimental investigations and use engineering practices to design solutions
to problems;
(C) use appropriate
safety equipment and practices during laboratory, classroom, and field
investigations as outlined in Texas Education Agency-approved safety
standards;
(D) use appropriate
tools such as dial caliper, micrometer, protractor, compass, scale rulers,
multimeter, and circuit components;
(E) collect quantitative data using the
International System of Units (SI) and United States customary units and
qualitative data as evidence;
(F)
organize quantitative and qualitative data using spreadsheets, engineering
notebooks, graphs, and charts;
(G)
develop and use models to represent phenomena, systems, processes, or solutions
to engineering problems; and
(H)
distinguish between scientific hypotheses, theories, and laws.
(3) The student analyzes and
interprets data to derive meaning, identify features and patterns, and discover
relationships or correlations to develop evidence-based arguments or evaluate
designs. The student is expected to:
(A)
identify advantages and limitations of models such as their size, scale,
properties, and materials;
(B)
analyze data by identifying significant statistical features, patterns, sources
of error, and limitations;
(C) use
mathematical calculations to assess quantitative relationships in data;
and
(D) evaluate experimental and
engineering designs.
(4)
The student develops evidence-based explanations and communicates findings,
conclusions, and proposed solutions. The student is expected to:
(A) develop explanations and propose
solutions supported by data and models and consistent with scientific ideas,
principles, and theories;
(B)
communicate explanations and solutions individually and collaboratively in a
variety of settings and formats; and
(C) engage respectfully in scientific
argumentation using applied scientific explanations and empirical
evidence.
(5) The
student knows the contributions of scientists and engineers and recognizes the
importance of scientific research and innovation on society. The student is
expected to:
(A) analyze, evaluate, and
critique scientific explanations and solutions by using empirical evidence,
logical reasoning, and experimental and observational testing so as to
encourage critical thinking by the student;
(B) relate the impact of past and current
research on scientific thought and society, including research methodology,
cost-benefit analysis, and contributions of diverse scientists and engineers as
related to the content; and
(C)
research and explore resources such as museums, libraries, professional
organizations, private companies, online platforms, and mentors employed in a
STEM field.
(6) The
student investigates engineering-related fields and career opportunities. The
student is expected to:
(A) differentiate
between engineering and engineering technology;
(B) compare the roles or job descriptions for
career opportunities in the fields of pure science, engineering, and
engineering technology;
(C)
identify and differentiate between the different engineering disciplines;
and
(D) demonstrate appropriate
oral, written, and visual forms of technical communication.
(7) The student demonstrates an
understanding of design problems and works individually and as a member of a
team to solve design problems. The student is expected to:
(A) solve design problems individually and in
a team;
(B) create solutions to
existing problems using a design process;
(C) use a design brief to identify problem
specifications and establish project constraints;
(D) use communication to achieve a desired
goal within a team; and
(E) work as
a member of a team to conduct research to develop a knowledge base, stimulate
creative ideas, and make informed decisions.
(8) The student understands mechanisms,
including simple and compound machines, and performs calculations related to
mechanical advantage, drive ratios, work, and power. The student is expected
to:
(A) explain the purpose and operation of
components, including gears, sprockets, pulley systems, and simple
machines;
(B) explain how
components, including gears, sprockets, pulley systems, and simple machines,
make up mechanisms;
(C) distinguish
between the six simple machines and their attributes and components;
(D) measure forces and distances related to a
mechanism;
(E) calculate work and
power in mechanical systems;
(F)
determine experimentally the efficiency of mechanical systems; and
(G) calculate mechanical advantage and drive
ratios of mechanisms.
(9) The student understands energy sources,
energy conversion, and circuits and performs calculations related to work and
power. The student is expected to:
(A)
identify and categorize energy sources as nonrenewable, renewable, or
inexhaustible;
(B) define and
calculate work and power in electrical systems;
(C) calculate and explain how power in a
system converts energy from electrical to mechanical; and
(D) define voltage, current, and resistance
and calculate each quantity in series, parallel, and combination electrical
circuits using Ohm's law.
(10) The student understands system energy
requirements and how energy sources can be combined to convert energy into
useful forms. The student understands the relationships between material
conductivity, resistance, and geometry in order to calculate energy transfer
and determine power loss and efficiency. The student is expected to:
(A) explain the purpose of energy
management;
(B) evaluate system
energy requirements in order to select the proper energy source;
(C) explain and design how multiple energy
sources can be combined to convert energy into useful forms;
(D) describe how hydrogen fuel cells create
electricity and heat and how solar cells create electricity;
(E) measure and analyze how thermal energy is
transferred via convection, conduction, and radiation;
(F) analyze how thermal energy transfer is
affected by conduction, thermal resistance values, convection, and radiation;
and
(G) calculate resistance,
efficiency, and power transfer in power transmission and distribution
applications for various material properties.
(11) The student understands the interaction
of forces acting on a body and performs calculations related to structural
design. The student is expected to:
(A)
illustrate, calculate, and experimentally measure all forces acting upon a
given body;
(B) locate the centroid
of structural members mathematically or experimentally;
(C) calculate moment of inertia of structural
members;
(D) define and calculate
static equilibrium;
(E)
differentiate between scalar and vector quantities;
(F) identify properties of a vector,
including magnitude and direction;
(G) calculate the X and Y components given a
vector;
(H) calculate moment forces
given a specified axis;
(I)
calculate unknown forces using equations of equilibrium; and
(J) calculate external and internal forces in
a statically determinate truss using translational and rotational equilibrium
equations.
(12) The
student understands material properties and the importance of choosing
appropriate materials for design. The student is expected to:
(A) conduct investigative non-destructive
material property tests on selected common household products;
(B) calculate and measure the weight, volume,
mass, density, and surface area of selected common household products;
and
(C) identify the manufacturing
processes used to create selected common household products.
(13) The student uses material
testing to determine a product's function and performance. The student is
expected to:
(A) use a design process and
mathematical formulas to solve and document design problems;
(B) obtain measurements of material samples
such as length, width, height, and mass;
(C) use material testing to determine a
product's reliability, safety, and predictability in function;
(D) identify and calculate test sample
material properties using a stress-strain curve; and
(E) identify and compare measurements and
calculations of sample material properties such as elastic range, proportional
limit, modulus of elasticity, elastic limit, resilience, yield point, plastic
deformation, ultimate strength, failure, and ductility using stress-strain data
points.
(14) The student
understands that control systems are designed to provide consentient process
control and reliability and uses computer software to create flowcharts and
control system operating programs. The student is expected to:
(A) create detailed flowcharts using a
computer software application;
(B)
create control system operating programs using computer software;
(C) create system control programs that use
flowchart logic;
(D) select
appropriate input and output devices based on the need of a technological
system; and
(E) judge between open-
and closed-loop systems in order to select the most appropriate system for a
given technological problem.
(15) The student demonstrates an
understanding of fluid power systems and calculates values in a variety of
systems. The student is expected to:
(A)
identify and explain basic components and functions of fluid power
devices;
(B) differentiate between
pneumatic and hydraulic systems and between hydrodynamic and hydrostatic
systems;
(C) use Pascal's Law to
calculate values in a fluid power system;
(D) distinguish between gauge pressure and
absolute pressure and between temperature and absolute temperature;
(E) calculate values in a pneumatic system
using the ideal gas laws; and
(F)
calculate and experiment with flow rate, flow velocity, and mechanical
advantage in a hydraulic system model.
(16) The student demonstrates an
understanding of statistics and applies the concepts to real-world engineering
design problems. The student is expected to:
(A) calculate and test the theoretical
probability that an event will occur;
(B) calculate the experimental frequency
distribution of an event occurring;
(C) apply the Bernoulli process to events
that only have two distinct possible outcomes;
(D) apply AND, OR, and NOT logic to solve
complex probability scenarios;
(E)
apply Bayes's theorem to calculate the probability of multiple events
occurring;
(F) calculate the
central tendencies of a data array, including mean, median, and mode;
(G) calculate data variations, including
range, standard deviation, and variance; and
(H) create and explain a histogram to
illustrate frequency distribution.
(17) The student demonstrates an
understanding of kinematics in one and two dimensions and applies the concepts
to real-world engineering design problems. The student is expected to:
(A) calculate distance, displacement, speed,
velocity, and acceleration from data;
(B) calculate experimentally the acceleration
due to gravity given data from a free-fall device;
(C) calculate the X and Y components of an
object in projectile motion; and
(D) determine and test the angle needed to
launch a projectile a specific range given the projectile's initial
velocity.