CAD Crafts teach measurement through play, exploration, creative problem solving, and challenges.
Students will understand how to use measurement tools, scales, and proportionality intuitively by constructing original toys with 2D shapes and 3D forms using 21st Century technology.
Students will understand how to use measurement tools, scales, and proportionality intuitively by constructing original toys with 2D shapes and 3D forms using 21st Century technology.
The standards outlined here are guidelines for and examples of CAD Craft's reinforcement of Common Core Standards for Measurement & Data and is not exhaustive of the topics students will intuit from designing their own toy.
How to read the standards:
CCSS Measurement & Data Domain
CCSS Standard definition link (goes to specific page on http://www.corestandards.org/Math/Content/MD/)
CCSS Measurement & Data Standard definition
 CAD Craft goals and application to standard
CAS definition
21st Century Skills
Depending on grade level, students will design toys using 2D graphics software or 3D modeling software. Students will become more precise with measurements and understand how to use computer software measuring tools. CAD Craft goals build upon what a student already understands from previous grade levels.
Grades 1 & 2
Measure lengths indirectly and by iterating length units.
Prepared Graduates: Understand quantity through estimation, precision, order of magnitude, and comparison...
Concepts and skills students master:
2. Measurement is used to compare and order objects and events
Express the length of an object as a whole number of length units...
 Before a student begins designing or planning their toy, they will use estimation to draft a rough outline of their toy's height & width
 Students will use rulers, tape measures, estimation, and computer software measurement tools to construct toys that will fit onto sheets of lettersized paper using whole inches as their standard of measurement
21st Century Skill & Readiness Competencies
Nature Of:
With only a few words, mathematicians use measurable attributes to describe countless objects.
Measure and estimate lengths in standard units.
Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.
 Students will utilize measuring tools to create precisely dimensioned toys
 Students will use measuring tools and references within a 2D graphics program to create a toy design that adheres to the dimensions they defined in a plan
Estimate lengths using units of inches, feet, centimeters, and meters.
 Students will express their toy dimensions using standard units of measurement (either inches or centimeters)
 Students will create a toy design that can fit on sheets of 8.5" x 11" (US Letter) paper or printable fabric sheets, and will use this measurement to create a "bounding box" in a computer graphics program
Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit.
Understand quantity through estimation, precision, order of magnitude, and comparison...
 Students will utilize estimation and proportions to design and construct a toy
 After estimating students will define these components with actual units (e.g. the arms for a 7 in. doll are 3 in. long)
Relate addition and subtraction to length.
Nature Of:
Mathematicians use measurable attributes to describe countless objects with only a few words.
 Students will utilize arithmetic to determine the amount of material they need (either paper or fabric)
 Students will use arithmetic to define component parts of their toy
Grade 3
Solve problems involving measurement and estimation.
Content Area: Mathematics
Grade Level Expectations: Third Grade
Standard: 4. Shape, Dimension, and Geometric Relationships
 Students will utilize estimation and proportions to design and construct a toy
 After estimating, students will define these components with actual units (e.g. the arms for a 6 in. doll are 2.5 in. long)
Inquiry Questions:
What kinds of questions can be answered by measuring?
What are the ways to describe the size of an object or shape?
Represent and interpret data.
Generate measurement data by measuring lengths using rulers marked with halves and fourths of an inch...
 Students will utilize rulers and computer software measurement tools to create toy designs that are precisely dimensioned
 Students may create toys that are the same size as, or are scaled to work with, their existing toys. In which case, they will precisely measure their reference toy before creating an original toy design.
e.g. A student might make furniture for Barbie, baby dolls, or other popular commercial toys
Geometric measurement: understand concepts of area and relate area to multiplication and to addition.
Recognize area as an attribute of plane figures and understand concepts of area measurement.
Relate area to the operations of multiplication and addition.
 Students will estimate approximate areas of their toys to determine how to fit their flat designs onto sheets of paper.
CAS Grade 4
Inquiry Questions:
How do you decide when close is close enough?
Geometric measurement: recognize perimeter.
Solve real world and mathematical problems involving perimeters of polygons...
 Students might use perimeter to determine the dimensions of embellishments for their project
e.g. Use perimeter of toy car to cut paper strips for "decals" around bottom edge of car
Concepts and skills students master:
2. Linear and area measurement are fundamentally different and require different units of measure
Grade 4
Solve problems involving measurement and conversion of measurements.
Content Area: Mathematics
Grade Level Expectations: Fourth Grade
Standard: 4. Shape, Dimension, and Geometric Relationships
Concepts and skills students master:
1. Appropriate measurement tools, units, and systems are used to measure different attributes of objects
 Students will understand how to scale their designs, and check their dimensions using pulldown menus in graphics software
 Students will understand will be able to define the unit "pixels"
 Students will convert units within the computer software, and recognize the relationship between standard units of measurement and pixels
Scaling an image in a drawing program (Inkscape)

Scaling an image to see pixels

Represent & Interpret Data
Concepts and skills students master:
2. Geometric figures in the plane and in space are described and analyzed by their attributes
Apply the area and perimeter formulas for rectangles in real world and mathematical problems.
 Students will calculate approximate areas of their toys using "bounding boxes" to determine how to fit their flat designs onto sheets of paper.
Geometric measurement: understand concepts of angle and measure angles.
Measure angles in wholenumber degrees using a protractor. Sketch angles of specified measure.
 Students will utilize angle measurements to create their projects in 2D and 3D programs
 Students will understand how to create straight lines at a predefined angle measurement in drawing programs like Inkscape
 Students will understand the importance of angles in designing toys such as dollhouses, furniture, or cars
e.g. It is important to make sure lines are precise so that when a paper toy is folded together, all the sides line up.
Relevance & Application:
The understanding and use of spatial relationships helps to predict the result of motions...
The application of spatial relationships of parallel and perpendicular lines aid in creation and building...
Grade 5
Convert like measurement units within a given measurement system.
Convert among differentsized standard measurement units within a given measurement system (e.g., convert 5 cm to 0.05 m), and use these conversions in solving multistep, real world problems.
 Students will understand how to scale their designs, and check their dimensions using pulldown menus in graphics software and 3D modeling software.
 Students will convert units within the computer software, and recognize the relationship between standard units of measurement and pixels
 Extending thinking—Students will understand and be able to define print resolution & dpi
Click each image to enlarge

Geometric measurement: understand concepts of volume.
Content Area: Mathematics
Grade Level Expectations: Fifth Grade
Standard: 4. Shape, Dimension, and Geometric Relationships
Concepts and skills students master:
1. Properties of multiplication and addition provide the foundation for volume an attribute of solids.
Recognize volume as an attribute of solid figures and understand concepts of volume measurement.
Relate volume to the operations of multiplication and addition and solve real world and mathematical problems involving volume.
Apply the formulas V = l × w × h and V = b × h for rectangular prisms to find volumes of right rectangular prisms with wholenumber edge lengths in the context of solving real world and mathematical problems.
 Students will understand that their finished toys have measurements of height, width, and depth
 Students will recognize that they can estimate the volume of their toys by measuring them as if they fit into an invisible box (using rulers to take straight measurements from the tallest part of their toy, the widest part, and the deepest part)
 Students will understand why knowing the volume of their toy would be useful
e.g. to determine how much space it will take up in their room
e.g. to determine if it can it fit in a closet or toy box
Extending thinking—to determine how much material would be needed if the toy was printed in liquid plastic, instead (would be necessary for mass production in a toy factory, or if they were to use a 3D printer)
Nature Of:
Mathematicians create visual and physical representations of problems and ideas that reveal relationships and meaning.
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