Grades 8-12
Mathematics
Geometry
Standard 12

Students find and use measures of sides, interior
and exterior angles of triangles and polygons
to classify figures and solve problems.


 
Resources
Lesson Plans
Assessments
Geometry 
Larson/Boswell/Stiff, 1995, 
D.C. Heath and Company

Section References

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

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 examine two different rulers, one metric and one standard, and tell the differences between them. 

2.) Students will measure the sides of different polygons, including triangles and polygons with more sides, and classify them. Equilateral, isoceles, and scalene are the classifications, based on the measurements of the sides. 
3.) Students will use a protractor to measure the angles of different triangles and classify them as obtuse, acute, right, equiangular, based on the measurements of the sides.
Previously Published Data

1.) Students will label an angle acute, obtuse, or right. 

2.) Students will accurately measure an angle, using a protractor. 
3.) Students will measure a line segment using both standard and metric systems. 
4.) Students will classify polygons based on the measurements of their sides and angles.