Objective of this unit is to develop a strong understanding of shapes and other geometric relationships, which is necessary to effectively and efficiently develop computer and graphic representations.

Today’s software employs parametric design functionality requires an understanding of plane and solid geometry as well as geometric relationships (such as perpendicular, parallel, and tangent).

In this unit you will transfer your knowledge of geometry to parametric computer modeling. You will also gain an understanding of the physical properties and learn how the geometry of objects affects the physical properties of those objects.

This unit is started during the 2nd marking period, covering sub-units 5.1, 5.3, 5.4.

The unit continues into the 3rd marking period with 5.5, 5.6, 5.7 and a review including 5.2 before the two exams in March (one multiple choice exam for terms and concepts, the other exam is on paper, demonstrating understanding of constraints, rotation of forms in Inventor, dimensioning and visual communication of parts, and calculation of surface area and volume in two situations.

Both exams on Unit 5 are worth 30 points each.

Some of these sub-units will be covered with activities in class, using Inventor. Other sub-units will be covered with worksheets, started during class and completed for homework:

5.1 Calculating Properties of Shapes

Activity: Worksheet 5.1 Calculating Properties of 2D shapes

5.2 Geometric Constraints

Activity: In-class activity in Inventor - 5.2b Introduction to CAD Modeling Skills - applying constraints to objects in Inventor - review activity before the exam on Unit 5, reviewing the constraints in 3rd marking period - ungraded

5.3 Determining Density

Activity: Worksheet 5.3 Determining Density - Homework, started during class- Not graded - checked for completion - 2nd marking period

5.4 Calculating Properties of Solids

Activity: Worksheet 5.4 Calculating Properties of Solids - Homework, started during class- Not graded - checked for completion - added to accumulated participation grade for homework assignments not graded.

5.5 Inventor rotation, holes, and annotations

Activity 5.5 Inventor rotation, holes, and annotations - Class activity on Inventor - submitted on Google Classroom - grade: 20 points on Feb 2

5.6 Physical Property Analysis

Activity: Worksheet 5.6 Physical Property Analysis - Homework, started during class, calculating volume, density and mass using mathematical equations, interpreting examples - checked for completion - added to accumulated participation grade for homework assignments not graded.

5.7 Force and Stability

Activity 5.7 Force and Stability worksheet - using examples from experiments during last year’s class, building boxes of varying heights, or varying mass, or varying base distance, to create mathematical equations (using excel spreadsheets and graphs) to predict tipping forces.- Not graded - checked for completion - added to accumulated participation grade for homework assignments not graded.