Westside High School 2014-2015
Geometry Prep: Unit 4: Triangles & Congruence
Stage 1 – Desired Results
TEKS/SEs:
 G.5.B use numeric and geometric patterns to make generalizations about geometric properties, including
properties of polygons, ratios in similar figures and solids, and angle relationships in polygons and circles;
Supporting Standard
 G.5.A use numeric and geometric patterns to develop algebraic expressions representing geometric
properties; Readiness Standard
 G.4.A Select an appropriate representation (concrete, pictorial, graphical, verbal, or symbolic) in order to
solve problems. Supporting Standard
 G.7.B use slopes and equations of lines to investigate geometric relationships, including parallel lines,
perpendicular lines, and special segments of triangles and other polygons. Readiness Standard
 G.9.B Formulate and test conjectures about the properties and attributes of polygons and their component
parts based on explorations and concrete models. Supporting Standard
Enduring Understandings: Essential Question(s):
Student objectives (outcomes):
 Students will be able
 How does
SWBAT:
to evaluate interior
understanding

and exterior angle
postulates help us
sums of triangles.
solve geometric
 Students can
problems?
determine class of
 How does the ability to
triangle by angle size
prove angle and
and side length.
segment length relate
 Students can
to the world around
describe the
us?
properties used to
solve algebraic
equations.
 Students can
determine triangle
congruence
Stage 2 – Assessment Evidence
Performance Task(s) and Other Evidence:
Formative
SO 4.1
SO 4.7
SO 4.2-6
Exit Ticket
Math Quick Write
Warm-up quiz
Summative (Attach copy)
Quiz 4.1
Quiz 4.7, section on Unit 4 Exam
Unit 4 Exam
Stage 3 – Learning Plan
DIFFERENTIATION (I-3) There are several ways to individualize instruction for your students
How will I scaffold and/or accelerate learning? For whom? How will I group my students?
SCAFFOLD: Will not start the differentiation process until beginning of 3 rd week of school when 2 exit tickets and a
quiz has been gathered.
ACCELERATE: There will always be extension puzzles; challenges question cards, and worksheets accessible to
my faster learners. Also enlisting them in the anchor chart making process or helping other students will also
increase the rigor because being able to teach or explain a concept to another person demonstrates true mastery of
an objective.
GROUP: Exit ticket scores will dictate what needs to be retaught whole group or small group. Will try to start pulling
small groups on block days, buts if not conducive with planning, will circulate during independent practice time to
my Tier 3 students and also pull them from small group tutorials during lunch.
Day 1:
10.15.14 &
10.16.14
Day 2:
10.17.14
Day 3:
10.20.14
Day 4:
10.21.14
Day 5:
10.22.14 &
10.23.14
Day 6:
10.24.14
Day 7:
10.27.14
Day 8:
10.28.14
4.1 Triangle Sum
4,7 Isosceles Triangle Properties
HW-4.1 WS Triangle Names
4.2 Triangle Congruence
HW 4.2 WS
4.1/4.7 Quiz
4.3-6 Prove Triangles Congruent by SSS and SAS
Congruence WS
District Snapshot
4.3-6 Prove Triangles Congruent by ASA and AAS
Congruence WS
4.3-6 Prove Triangles Congruent by HL (Right Triangles)
Congruence WS
Unit 4 test review
Unit 4 Test