HSG-CO.A.1

Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.

 
46 Lesson(s)
   

Models & Constructions Unit Quiz

Geometry » Unit: Models and Constructions
Geometry » Unit: Models and Constructions
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Students show what they have learned: from vocabulary and basic skills to an application in an unfamiliar context.

 
Favorites (3)
 
Resources (31)
 
Reflections (4)
quotation poincare
   

Cell Phone Towers

Geometry » Unit: Models and Constructions
Geometry » Unit: Models and Constructions
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

What geo-locations lurk in our hearts? Your cell phone knows! Students analyze the region from which a call was made and discover a property of bisectors.

 
Favorites (11)
 
Resources (26)
cell phone towers
   

Reviewing Geometric Models

Geometry » Unit: Models and Constructions
Geometry » Unit: Models and Constructions
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

We have applied the properties of these objects in modeling situations. Now, what have we learned by "doing geometry"?

 
Favorites (7)
 
Resources (27)
 
Reflections (1)
reviewinggeometricmodels image
   

Finding Your Center

Geometry » Unit: Models and Constructions
Geometry » Unit: Models and Constructions
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

If we know two points where a Wi-Fi signal has the same strength, can we find the hotspot? Not yet, but we can model the possible locations.

 
Favorites (7)
 
Resources (24)
 
Reflections (1)
findingyourcenter image
   

Submarine Smart Phone

Geometry » Unit: Models and Constructions
Geometry » Unit: Models and Constructions
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Using lines to represent information about the position of an object. I know where your cell phone fell into the water!

 
Favorites (7)
 
Resources (26)
 
Reflections (1)
submarine smart phone
   

Introduction to Geometry

Geometry » Unit: Tools of Geometry
Geometry » Unit: Tools of Geometry
Beth Menzie
Amsterdam, NY
Environment: Urban
 
Big Idea:

There's no doubt about it - we've got to know them! Important geometric definitions and vocabulary.

 
Favorites (29)
 
Resources (29)
 
Reflections (3)
image introduction to geometry
   

Tools of Geometry Unit Assessment

Geometry » Unit: Tools of Geometry
Geometry » Unit: Tools of Geometry
Beth Menzie
Amsterdam, NY
Environment: Urban
 
Big Idea:

Test time! Students take the first unit assessment, aligned to the Common Core standards for this unit.

 
Favorites (8)
 
Resources (13)
image2 test
   

Angle Management

Geometry » Unit: Dimension and Structure
Geometry » Unit: Dimension and Structure
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Using constructions to understand the structure of an angle and to model the operation of a navigator's position-finder.

 
Favorites (1)
 
Resources (40)
 
Reflections (3)
anglemanagement image
   

Diagonal Daze

Geometry » Unit: Dimension and Structure
Geometry » Unit: Dimension and Structure
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Students analyze the structure of polygons and learn how this structure can be used to represent a real-world phenomenon. Will Facebook make our brains grow larger?

 
Favorites (2)
 
Resources (33)
 
Reflections (4)
diagonaldaze image
   

Cell Phone 9-1-1

Geometry » Unit: Models and Constructions
Geometry » Unit: Models and Constructions
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Using circles to represent information about the position of an object. I know where your cell phone is located!

 
Favorites (4)
 
Resources (32)
 
Reflections (3)
cell phone 911 image resized
   

From Perpendiculars to Parallels

Geometry » Unit: Congruence and Rigid Motions
Geometry » Unit: Congruence and Rigid Motions
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Students consolidate and extend their knowledge of constructions related to bisectors: "A perpendicular to a perpendicular is a parallel."

 
Favorites (3)
 
Resources (29)
 
Reflections (2)
fromperpendicularstoparallels image
   

Reviewing Intersections

Geometry » Unit: Dimension and Structure
Geometry » Unit: Dimension and Structure
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Students review homework and complete their learning portfolios for the unit. How much have we learned?

 
Favorites (1)
 
Resources (26)
 
Reflections (2)
reviewingconstructions image
   

Reviewing Structure

Geometry » Unit: Dimension and Structure
Geometry » Unit: Dimension and Structure
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Students review homework and assess their progress. How much have we learned?

 
Favorites (1)
 
Resources (25)
 
Reflections (1)
reviewingconstructions image
   

Introduction to Geometry (Part 2)

Geometry » Unit: Tools of Geometry
Geometry » Unit: Tools of Geometry
Beth Menzie
Amsterdam, NY
Environment: Urban
 
Big Idea:

It's all about angles! Angles, angle pairs, and how to bisect them.

 
Favorites (12)
 
Resources (19)
 
Reflections (1)
image intro to geometry2
   

Reviewing Constructions

Geometry » Unit: Models and Constructions
Geometry » Unit: Models and Constructions
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Students review homework and complete their learning portfolios for the unit. How much have we learned?

 
Favorites (2)
 
Resources (21)
reviewingconstructions image
Common Core Math
 
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