Grades 8-12
Mathematics
Geometry
Standard 4

Students prove basic theorems involving
congruence and similarity.


 
Resources
Lesson Plans
Assessments

Geometry Larson/Boswell/
Stiff, 1995,
D. C. Heath and Company

Section References

1.3 Exploring Congruence and Similarity

4.1 Exploring Congruent Triangles

4.2 Angles of a Triangle

4.3 Proving that Triangles are Congruent

4.4 More Ways to Prove that Triangles are Congruent

4.5 Using Congruent Triangles

4.6 Isosceles Triangles and Right Triangles

4.7 Extended Application: Constructions

5.1 Exploring Parts of Triangles

5.2 Special Segments in a Triangle

5.3 Midsegment Theorem

Video

Teaching Math: A Video Library, 9-12, WGBH Boxton, 1996

Specific Textbook 
Web Sites

http://www.glencoe.com/
sec/math/prealg/mathnet/

http://www.eduplace.com/
links/

http://www.eduplace.com/

http://www.hmco.com/
college/mathematics/
index.html

http://www.mcdougallittell
.com/

http://www.hmco.com/

http://www.SRA-4KIDS.com/

General Math 
Reference Sites

http://www.learner.org/
sami/view-category.php3
?category=math

http://www.score.k12.ca.us/

http://henson.austin.apple
.com/edres/curric.shtml

http://school.discovery.com/
schrockguide/index.html

http://www.EDsOasis.org/

http://www.math.com/

http://www.nea.org/grants/
free.html

http://www.wcom.com/
marcopolo/

http://www.udel.edu/sine/

http://dewey.chs.chico.k12
.ca.us/math.html

Free Stuff

http://www.nea.org/
grants/free.html

State/National Math 
Ed Organizations

http://www.nctm.org/

http://www.cde.ca.gov/

Calif. Dept. of Ed. Standards, Assessment, Ed. Reference.

Calculator Reference Site

http://www.ti.com/
calc/docs/calchome.html



Previously Published Data

1.) Students will construct triangles according to some given information and cut out the triangles in order to compare their triangles with the triangles of their classmates. 


2.) Students will use the theorems to prove triangles congruent or not congruent, based on given information. 
3.) Students will use the theorems to prove triangles similar or not similar, based on given information.


 





Previously Published Data

1.) Given information about several triangle pairs, students will prove the triangle congruent, similar, or neither congruent nor similar.