# Learning Exercise

## Congruent Triangles / Geometry

Adjustable lesson for introduction to congruent triangles that includes different complementary technologies.
Course: Mathematics
Share

#### Congruence of Triangles

This manipulative allows you to construct two triangles from various combinations of sides and angles, then manipulate... see more

#### Exercise

Behavioral Objective(s): SWBAT: -Identify pairs of congruent triangles -Identify corresponding parts of congruent triangles Essential Question (Higher Level Thinking Questions): -How can you tell if two triangles are congruent? Opening (Anticipatory Set): -The teacher will present numerous triangles of different shapes and sizes on the board one at a time. Then ask all of the students to take a long close look at the board. -The teacher will engage the class in a discussion on what they see and write down suggestions on the board. -After all suggestions have been made then the teacher will inform the class that we are going to be working on seeing Congruent Triangles. Modeling/ Guided Practice: -The teacher will say Let me show you congruent triangles. The teacher will take down all of the triangles except for the two triangles that are the same on the board. -Students will be asked what they think congruent triangles are now. -The teacher will explain what congruent means and give examples to the students. Independent Practice: -The teacher will assign the class into pairs; they will have to explore the classroom and find shapes that are congruent. (Preferably triangles if they cant find any another shape will do just fine).  Given the writing prompt My shapes are _________ and are congruent because. They will have to draw and explain what the shape is in their math journals.  Students will then have the opportunity to work on the computer to construct congruent triangles at http://nlvm.usu.edu/en/nav/frames_asid_165_g_2_t_3.html?open=instructions&hidepanel=true&from=grade_g_2.html Closure:  Students present their findings to the whole group and the teacher will comment on their findings.

#### Requirements

Basic understanding of different types of triangles, isosceles, scalene, equilateral; and that triangles vary.

#### Topics

Mathematics Geometry Triangles Congruence