Westside High School Lesson Plan
Teacher Name:
Zita
Unit Name and #:
Course:
Geometry PAP
Dates:
Chapter 7A Special
Right Triangles
1/12/15-1/16/15
Topic: 7.4 Special Right Triangles 45-45-90
What are we learning?
Daily Objective:
 I will be able to identify patterns to discover the ratio for the sides of a special 45-4590 right triangle.
TEKS/AP/Standards:
 G.5.D: Identify and apply patterns from right triangles to solve meaningful problems,
including special right triangles (45-45-90 and 30-60-90) and triangles whose sides are
Pythagorean triples.
Monday
How will we learn it?
Learning Activities:
 Students will work in pairs to complete a table to discover a pattern for the ratio of
the sides of a special 45-45-90 right triangle.
How will we tell if we’re learning it correctly?
Assessment Methods:
 Students must complete table using Pythagorean Theorem to discover the pattern for
the side lengths of special 45-45-90 triangles.
Checks for Understanding:
 Students will use the person next to them to check their table for special 45-45-90
triangles.
 After the students complete the table, the teacher will ask Key Questions:
1) What type of triangle is a 45-45-90 special right triangle?
2) What is the relationship between the lengths of the sides of any 45-45-90 special
right triangle?
3) Express the above relationship in terms of x.
What do I need to be successful?
 Chapter 7A Packet
 Teacher will provide 45-45-90 table
Tu
es
da
y
What do I need to before next class?
Follow Up/HW:
 HW: Pg. 21-23
 Recitation Project due January 16
 Students should bring a dollar bill to class tomorrow
Topic: 7.4 Special Right Triangles 30-60-90
Wed/Thur
What are we learning?
Daily Objective:
 I will be able to discover a pattern of finding the altitude of an equilateral triangle to
find the ratio for special 30-60-90 right triangles.
TEKS/AP/Standards:
 G.5.D: Identify and apply patterns from right triangles to solve meaningful problems,
including special right triangles (45-45-90 and 30-60-90) and triangles whose sides are
Pythagorean triples.
How will we learn it?
Learning Activities:
 Dollar Bill 30-60-90 Triangle Activity
 Students will work in pairs to complete a table to discover a pattern for the ratio of
the sides of a special 30-60-90 right triangle.
How will we tell if we’re learning it correctly?
Assessment Methods:
 Students must complete table using Pythagorean Theorem to discover the pattern for
the side lengths of special 30-60-90 triangles.
Checks for Understanding:
 Students will use the person next to them to check their table for special 30-60-90
triangles.
 After the students complete the table, the teacher will ask Key Questions:
1) What type of triangle is a 30-60-90 special right triangle?
2) What is the relationship between the lengths of the sides for any 30-60-90 special
right triangle?
3) Express the above relationship in terms of x.
What do I need to be successful?
Materials:
 Chapter 7A Packet
 Students must bring a dollar bill
 Rulers
What do I need to before next class?
Follow Up/HW:
 HW: Pg. 17-20
 Recitation Project due January 16
Topic: Combo Day, Very Special Right Triangles, Quiz
What are we learning?
Daily Objective:
 I will be able to solve multiple variables to find the lengths of the sides of special 4545-90 and 30-60-90 right triangles.
TEKS/AP/Standards:
 G.5.D: Identify and apply patterns from right triangles to solve meaningful problems,
including special right triangles (45-45-90 and 30-60-90) and triangles whose sides
are Pythagorean triples.
How will we learn it?
Learning Activities:
 Students will be given a work day to work on “Combo Day 1,” “Combo Day 2,” and
“Review Special Right Triangles” worksheets found in their Chapter 7 packet.
Friday
How will we tell if we’re learning it correctly?
Assessment Methods:
 Quiz over 45-45-90 and 30-60-90 special right triangles
Checks for Understanding:
 Quiz over 45-45-90 and 30-60-90 special right triangles
- Students will trade and grade each other quizzes. After, teacher will have a Q&A
session and go over any questions.
What do I need to be successful?
Materials:
 Chapter 7A Packet
What do I need to before next class?
Follow Up/HW:
 HW: Pg. 24-28
 Recitation Project due TOMORROW
Topic: Review Day for Test #10
What are we learning?
Daily Objective:
 Review
TEKS/AP/Standards:
 Review
How will we learn it?
Learning Activities:
 Students will work in pairs to complete review in packet.
How will we tell if we’re learning it correctly?
Assessment Methods:
 Review
Checks for Understanding:
 Teacher will walk around room while students are working together on the
review. Teacher will go over any questions that the students still need more
practice on as a whole.
What do I need to be successful?
Materials:
 Chapter 7A Packet
What do I need to before next class?
Follow Up/HW:
 HW: Review Pg. 29-31