Westside High School Lesson Plan
Teacher Name:
Garrett, Shannen
Unit Name and #:
Unit 2:
Unit 3: Triangle Properties
and Congruence
Course:
Geometry MOD B
Dates:
Mar 23 – Mar 27, 2015
What are we learning?
Daily Objective:


The student will be able to describe triangles based on their angles and sides.
The student will be able to determine the measures of interior and exterior angles of
triangles.
Monday
TEKS/AP/Standards:
Ⓡ GEOM.2B Make conjectures about angles, lines, polygons, circles, and three-dimensional
figures and determine the validity of the conjectures, choosing from a variety of
approaches such as coordinate, transformational, or axiomatic.
Ⓢ GEOM.3D Use inductive reasoning by collecting information and finding patterns to
formulate conjectures.
Ⓢ GEOM.3E Use deductive reasoning to prove a statement.
How will we learn it?
Learning Activities:
 Triangle Fundamentals PowerPoint
 Classifying Triangles Worksheet
How will we tell if we’re learning it correctly?
Assessment Methods:
Classifying Triangles Worksheet
Checks for Understanding:
 Teacher observation
 Cold-calling students
What do I need to be successful?
Materials: Calculators, worksheet, computer, PowerPoint, notes
What do I need to do before next class?
Follow Up/HW: Finish Classifying Angles Worksheet
What are we learning?
Daily Objective:
 The student will be able to apply the Isosceles Triangle Theorem in determining angle
and side measurements.
TEKS/AP/Standards:
GEOM.1A Develop an awareness of the structure of a mathematical system, connecting
definitions, postulates, logical reasoning, and theorems to verify statements.
Ⓡ GEOM.3C Use logical reasoning and several methods of proof (flow proofs, transformation
proofs, coordinate proofs, and two-column proofs) to prove statements are true, and find
counter- examples to disprove statements that are false.
Ⓢ GEOM.3E Use deductive reasoning to prove a statement.
Tuesday
How will we learn it?
Learning Activities:
o Isosceles Triangles PPT
o Isosceles Triangle – Class Work
How will we tell if we’re learning it correctly?
Assessment Methods:
Isosceles Triangle Worksheet
Checks for Understanding:
Teacher observation
Students will share with another person
What do I need to be successful?
Materials: Calculators, worksheet, computer, PowerPoint, notes
What do I need to before next class?
Follow Up/HW:
What are we learning?
Daily Objective:



The student, given information concerning the lengths of sides and/or measures of
angles, will order the sides by length given the angle measures
The student, given information concerning the lengths of sides and/or measures of
angles, will order the angles by degree measure, given the side lengths
The student, given information concerning the lengths of sides and/or measures of
angles, will determine the range in which the length of the third side must lie.
Wed/Thur
TEKS/AP/Standards:
GEOM.1A Develop an awareness of the structure of a mathematical system, connecting
definitions, postulates, logical reasoning, and theorems to verify statements.
Ⓡ GEOM.3C Use logical reasoning and several methods of proof (flow proofs, transformation
proofs, coordinate proofs, and two-column proofs) to prove statements are true, and find
counter- examples to disprove statements that are false.
Ⓢ GEOM.3E Use deductive reasoning to prove a statement.
How will we learn it?
Learning Activities:



Triangle Inequalities PPT
Triangle Inequalities Worksheet
Odyssey Math – Triangles and Congruence
How will we tell if we’re learning it correctly?
Assessment Methods:
Teacher observation
Checks for Understanding:
Teacher observation
Student questioning
What do I need to be successful?
Materials: Calculators, worksheet, computer, PowerPoint, notes
What do I need to before next class?
Follow Up/HW:
What are we learning?
Daily Objective:



The student, given information concerning the lengths of sides and/or measures of
angles, will order the sides by length given the angle measures
The student, given information concerning the lengths of sides and/or measures of
angles, will order the angles by degree measure, given the side lengths
The student, given information concerning the lengths of sides and/or measures of
angles, will determine the range in which the length of the third side must lie.
Friday
TEKS/AP/Standards:
GEOM.1A Develop an awareness of the structure of a mathematical system, connecting
definitions, postulates, logical reasoning, and theorems to verify statements.
Ⓡ GEOM.3C Use logical reasoning and several methods of proof (flow proofs, transformation
proofs, coordinate proofs, and two-column proofs) to prove statements are true, and find
counter- examples to disprove statements that are false.
Ⓢ GEOM.3E Use deductive reasoning to prove a statement.
How will we learn it?
Learning Activities:
o Polygons PPT
o Polygons Worksheet – Class Work and Homework
How will we tell if we’re learning it correctly?
Assessment Methods:
Student completion of assignments
Checks for Understanding:
Teacher observation
Student questioning
What do I need to be successful?
Materials: Calculators, computer, pencils, paper, foldable
What do I need to before next class?
Follow Up/HW: