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Unit 2 - Non-Right Angled Geometry

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Statement of Inquiry

Geometry and trigonometry allow us to quantify the physical world, enhancing our spatial awareness in two and three dimensions. This branch provides us with the tools for analysis, measurement, and transformation of quantities, movements, relationships.

Concepts

Space,
Representation

Space:
The frame of geometrical dimensions describing an entity.
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Representation:
The manner in which something is presented.
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Learning Topics

  • Area of a triangle and other 2D figures

  • Area of a sector

  • 3D Solids: right cylinder, pyramid,
    right cone, sphere, hemisphere

  • An angle between two lines and
    between a line and a plane

  • Volume

  • Surface area of 3D figures

Course Syllabus Topics

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Conceptual Understandings

  • The properties of shapes are highly dependent on the dimension they occupy in space.

  • Volume and surface area of shapes are determined by formulas, or general mathematical relationships or rules expressed using symbols or variables.

  • The relationship between the length of the sides and the size of the angles in a triangle can be used to solve many problems involving position, distance, angles , and area.

Further Conceptual Understandings

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Unit Discussion
Questions & Suggestions

Click on the microphone icon to enter our Unit and Lesson Discussion.

  • Begin a discussion thread by adding a specific question under a Lesson heading.

  • Suggest links to videos and websites that have helped you in your learning.

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Video Lesson

 


Ask your questions
in our Unit Discussion.

​

Learn

Lesson 1:

 

The Sine Rule

Link to the Course Calendar



 

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In SeeSaw, respond to one.  Then, comment to someone else with agreements/disagreements.
 

TOK Reflections:

.If sine, cosine and tangent are ratios of angles to sides in right triangles how is it possible that we use them in formulas for non-right triangles?
 

Reflect

Lesson 2:

 

The Cosine Rule

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Video Lesson
 


Ask your questions
in our Unit Discussion.

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Learn

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Lesson Presentation (including Practice Problems/Solutions)

Practice Assignment
 

Collaborate

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In SeeSaw, respond to one.  Then, comment to someone else with agreements/disagreements.
 

TOK Reflections:

It is often said that Euler's relation is the most
beautiful equation in all of mathematics. What is meant by beauty and elegance in math ?

 

Reflect

Lesson 3:

 

Area of a Triangle

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Video Lesson
 


Ask your questions
in our Unit Discussion.

​

Learn

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In SeeSaw, respond to one.  Then, comment to someone else with agreements/disagreements.
 

TOK Reflections:

"Mathematicians admire elegance and simplicity above all else -- the ultimate goal is always the method that does the manner most efficiently." Keith Devlin      Discuss.

Reflect

Lesson 4:

 

Sector Area

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Video Lesson
 


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in our Unit Discussion.

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Learn

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In SeeSaw, respond to one.  Then, comment to someone else with agreements/disagreements.
 

TOK Reflections:

None today.
 

Reflect

Lesson 5:

 

Volume 

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Video Lesson 1
Video Lesson 2
 


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in our Unit Discussion.

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Learn

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In SeeSaw, respond to one.  Then, comment to someone else with agreements/disagreements.
 

TOK Reflections:

What are the Platonic Solids and why are
they an important part of the language of
mathematics ?

 

Reflect

Lesson 6:

 

Surface Area

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Video Lesson

 


Ask your questions
in our Unit Discussion.

​

Learn

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In SeeSaw, respond to one.  Then, comment to someone else with agreements/disagreements.
 

TOK Reflections:

...
 

Reflect

Lesson 7:

 

Toolkit Activity
and Unit Review

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Catch up on recent
videos / practice
assignments.

Ask your questions
in our Unit Discussion.

​

Learn

reflect.JPG

In SeeSaw, respond to one.  Then, comment to someone else with agreements/disagreements.
 

TOK Reflections:

...
 

Reflect

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