Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

Monthly Update sign up
Mailing List signup
Search
Follow The Annenberg Learner on LinkedIn Follow The Annenberg Learner on Facebook Follow Annenberg Learner on Twitter
MENU
Learning Math Home
Geometry Session 1, Part D: Basic Objects
 
Session 1 Part A Part B Part C Part D Homework
 
Glossary
Geometry Site Map
Session 1 Materials:
Notes
Solutions
Video

Session 1, Part D:
Basic Objects (20 minutes)

In Part C, you used dots on paper to represent points, segments drawn by a pen, and folds to represent ideal line segments and even lines. Think about these "basic objects" of geometry:

Problem D1

Solution  

What is a point? How is it different from a dot on a page?


 

Problem D2

Solution  

What is a line? A segment? A ray? How are they different from the representations you were using?


 

Problem D3

Solution  

What is a plane? How is it different from a sheet of paper?



video thumbnail
 

Video Segment
In this video segment, participants discuss some of the vocabulary of geometry. Watch this segment after you have completed Problems D1-D3 and compare your thinking with that of the onscreen participants.

What are some of the difficulties the participants ran into while trying to define a point and a line? How are your descriptions similar to or different from those of the onscreen participants?

If you are using a VCR, you can find this segment on the session video approximately 20 minutes and 48 seconds after the Annenberg Media logo.

 

 

Problem D4

Solution  

What is a circle? Why is it impossible to draw a true circle?


 

Problem D5

write Reflect  

Reflect on your learning of geometry in the past. What is geometry "all about"? What is important in becoming a successful learner of geometry?


Next > Homework

Learning Math Home | Geometry Home | Glossary | Map | ©

Session 1: Index | Notes | Solutions | Video

© Annenberg Foundation 2014. All rights reserved. Legal Policy