PLTW INTRO TO ENGINEERING DESIGN
2026 LEARNING COMPANION CAD
MODELING AND DIGITAL DESIGN TOOLS
FUNDAMENTALS
◉ Why would you have to know how to convert measurements
when looking at a technical
drawing?
Answer: If they are not in the units preferred by the engineer, they
will need to change them
◉ Why is placement of your dimensions so important?
Answer: So they can be read without confusion
◉ How can you use units help you solve a problem?
Answer: If the Units are all the same communication of size and
shape are understood with out confusion.
◉ Why do designers need to fully dimension a part?
Answer: A fully dimension part is required to
communicate clearly how the part is to be constructed.
,◉ What does it mean when a sketch is over dimensioned?
Answer: A sketch is over dimensioned when
the same measurement/dimension is on 2 or more of the views:
such as the over all width is
placed in both the front and top views. This can cause confusion and
increase the
probability of the part being constructed incorrectly
◉ A graph of vertical bars representing the frequency distribution of
a set of data is
called
Answer: Histogram
◉ Collection of methods for planning experiments, obtaining data,
organizing, summarizing,
and presenting, analyzing, interpreting, and drawing conclusions
based on data.
Answer: Statistics
◉ measure of the spread of data values
Answer: Standard Deviation
, ◉ Normal Distribution
Answer: A function that represents the distribution of variables as a
symmetrical bell-shaped graph.
◉ Mode
Answer: The value that occurs most frequently in a given data set
◉ Range
Answer: difference between the largest and smallest values that
occur
in a set of data.
◉ Median
Answer: A measure of center in a set of numerical data
◉ Significant digits
Answer: The digits in a decimal number that carry meaning
contributing to the precision or accuracy
of the quantity
◉ Central Tendency
Answer: Center of a distribution: Mean, Median or
2026 LEARNING COMPANION CAD
MODELING AND DIGITAL DESIGN TOOLS
FUNDAMENTALS
◉ Why would you have to know how to convert measurements
when looking at a technical
drawing?
Answer: If they are not in the units preferred by the engineer, they
will need to change them
◉ Why is placement of your dimensions so important?
Answer: So they can be read without confusion
◉ How can you use units help you solve a problem?
Answer: If the Units are all the same communication of size and
shape are understood with out confusion.
◉ Why do designers need to fully dimension a part?
Answer: A fully dimension part is required to
communicate clearly how the part is to be constructed.
,◉ What does it mean when a sketch is over dimensioned?
Answer: A sketch is over dimensioned when
the same measurement/dimension is on 2 or more of the views:
such as the over all width is
placed in both the front and top views. This can cause confusion and
increase the
probability of the part being constructed incorrectly
◉ A graph of vertical bars representing the frequency distribution of
a set of data is
called
Answer: Histogram
◉ Collection of methods for planning experiments, obtaining data,
organizing, summarizing,
and presenting, analyzing, interpreting, and drawing conclusions
based on data.
Answer: Statistics
◉ measure of the spread of data values
Answer: Standard Deviation
, ◉ Normal Distribution
Answer: A function that represents the distribution of variables as a
symmetrical bell-shaped graph.
◉ Mode
Answer: The value that occurs most frequently in a given data set
◉ Range
Answer: difference between the largest and smallest values that
occur
in a set of data.
◉ Median
Answer: A measure of center in a set of numerical data
◉ Significant digits
Answer: The digits in a decimal number that carry meaning
contributing to the precision or accuracy
of the quantity
◉ Central Tendency
Answer: Center of a distribution: Mean, Median or
