# Congruence

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 Keywords: Congruence, measurement Subject(s): Grades 5 through 7 NETS-S Standard: Creativity and InnovationCommunication and CollaborationCritical Thinking, Problem Solving, and Decision MakingView Full Text of Standards School: Westhaven Elementary School, Portsmouth, VA Planned By: Brandi Cotton Original Author: Brandi Cotton, Portsmouth
Title/Lesson: Measurement

SOL#: 6.15
The student will determine congruence of segments, angles, and polygons by direct comparison, given their attributes. Examples of non-congruent and congruent figures will be included.

Curriculum Frameworks Page Number: 24

Essential Knowledge:
The student will use problem solving, mathematical communication, mathematical reasoning, connections, and representations to:
• Characterize polygons as congruent and non-congruent according to the measures of their sides and angles.
• Determine the congruence of segments, angles, and polygons by direct comparison, given their attributes.
Essential Vocabulary:
Congruent – same size, same shape

Non-congruent - different shapes and sizes

Polygons – any closed shapes

Comparison -

Similar – nearly, but not exactly the same or alike

Objective: TSW/TTL:

6.15.1 Characterize polygons as congruent and non congruent according to the measures of their sides and angles.

Set:
Using the Promethean board, the students will have to organize shapes based on their attributes. Some shapes will be open to show ir-regular shapes.

Procedure/Input:
TTW have students find congruent shapes by using patty paper. The shapes will be given in a regular and reduced size. The patty paper will help the students decide if the shapes are congruent or similar. TSW complete P 524, #1-6.

DIFFERENTIATED ACTIVITY:

Group A – Teacher Guided Remediation Group B-Independent
TTW give the students more examples to use with the patty paper.
P 536 #9-22

Eval:
Check class work for understanding.

Clo:
How does patty paper help us determine congruent or similar shapes?

Materials:
Text, Overhead, White board, grid paper, patty paper.

Instructional Strategy:
• Hwrk/Prct • Sim/Diff • Summ/NtTkng • Coop Lrng • Reinf Eff/Pro Recog • Nonling. Rep.
• Set Goal/Pro Fdbk • Gener/Tst Hypot • Clues/Q/Advanced Org

Higher Leveled Questions: Circle 3: K C A A S E
1 How would you classify shapes as similar or congruent.
2 How could you verify whether shapes are similar or congruent?
3 How would you define similar and congruent?

Technology:

Students will use a Promethean Flipchart to determine congruent figures by manipulation.
 Cross-Curriculum Ideas Science and Measurement Follow-Up Using patty paper or tracing paper to find congruence. Materials: Whiteboards, Mobile Labs, Flip Video, MP3 Players, Middle School, Printers, Camera/Video Accessories, Tripods, Headsets, Math, Middle