Download 3rd_MA_MG_2.2_ATTRIBUTES_TRIANGLES_DW

Name ______________________
L ea rn i n g Obj e cti v e
Today, we will classify1 triangles by their attributes.
1 put
into groups
CFU
What are we going to do today?
What does classify mean? Classify means __________.
Activate (or provide) Prior Knowledge
A triangle is a shape with three sides and three angles.
Which two triangles are the same?
1.
A
B
C
2.
A
B
C
CFU
Students, you already know that some triangles look the same. Triangles that are the same can
sometimes be classified into groups. Today, we will classify triangles by their attributes.
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? [email protected]
3rd Grade Measurement and Geometry 2.2 (2Q)
Identify attributes of triangles (e.g., two equal sides for the isosceles
triangle, three equal sides for the equilateral triangle, right angle for
the right triangle).
Lesson to be used by EDI-trained teachers only.
Co n c e pt D ev el opm e n t
Triangles can be classified by their attributes2.
• The attributes of a triangle are the sides and angles.
2 features
Classifying Triangles by:
CFU # 1
Which of the following is an equilateral triangle? How do you know?
A
5 in
5 in
B
6 in
Flashcards
Right Triangles
4 in
7 in
5 in
What is the difference between an equilateral triangle and an isosceles triangle?
Which of the following is a scalene triangle? How do you know?
A
4 in
5 in
B
4 in
6 in
CFU # 2
Which of the following is a right triangle?
How do you know?
A
6 in
9 in
8 in
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? [email protected]
4 in
6 in
B
10 in
6 in
8 in
3rd Grade Measurement and Geometry 2.2 (2Q)
Identify attributes of triangles (e.g., two equal sides for the isosceles
triangle, three equal sides for the equilateral triangle, right angle for
the right triangle).
Lesson to be used by EDI-trained teachers only.
Ski l l Dev el o pm en t /G u i ded P ra cti c e
Triangles can be classified by their attributes.
• The attributes of a triangle are the sides and angles.
Classify triangles by their attributes.
Step #1: Look at the triangle carefully.
a. Identify3 equal sides on the triangle. (circle)
Step #2: Classify the triangle by its sides. “The triangle is a(an) ______ triangle because __________.”
3
find
A
B
C
D
CFU
(#1a) How did I/you identify equal sides on the triangle?
(#2) How did I/you classify the triangle by its sides?
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? [email protected]
3rd Grade Measurement and Geometry 2.2 (2Q)
Identify attributes of triangles (e.g., two equal sides for the isosceles
triangle, three equal sides for the equilateral triangle, right angle for
the right triangle).
Lesson to be used by EDI-trained teachers only.
Ski l l Dev el o pm en t /G u i ded P ra cti c e ( c on t i n u ed)
Triangles can be classified by their attributes.
• The attributes of a triangle are the sides and angles.
Classify triangles by their attributes.
Step #1: Look at the triangle carefully.
a. Identify equal sides on the triangle. (circle)
Step #2: Classify the triangle by its sides. “The triangle is a(an) ______ triangle because __________.”
E
F
CFU
(#1a) How did I/you identify equal sides on the triangle?
(#2) How did I/you classify the triangle by its sides?
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? [email protected]
3rd Grade Measurement and Geometry 2.2 (2Q)
Identify attributes of triangles (e.g., two equal sides for the isosceles
triangle, three equal sides for the equilateral triangle, right angle for
the right triangle).
Lesson to be used by EDI-trained teachers only.
Rel e va n c e
Triangles can be classified by their attributes.
• The attributes of a triangle are the sides and angles.
1. Classifying triangles will help you create interesting designs.
Triangles in paintings.
Triangles in buildings.
2. Classifying triangles will help you do well on tests.
CFU
Does anyone else have another reason why it is relevant to classify triangles by their attributes? (pairshare) Why is it relevant to classify triangles by their attributes? You may give me one of my reasons or
one of your own. Which reason is more relevant to you? Why?
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? [email protected]
3rd Grade Measurement and Geometry 2.2 (2Q)
Identify attributes of triangles (e.g., two equal sides for the isosceles
triangle, three equal sides for the equilateral triangle, right angle for
the right triangle).
Lesson to be used by EDI-trained teachers only.
Triangles can be classified by their attributes.
• The attributes of a triangle are the sides and angles.
Ski l l Cl osu r e
Classify triangles by their attributes.
Step #1: Look at the triangle carefully.
a. Identify equal sides on the triangle. (circle)
Step #2: Classify the triangle by its sides. “The triangle is a(an) ______ triangle because _________.”
A
B
Co n st ru ct e d R es po n s e Cl o su r e
What is the missing side length that will
make the triangle an equilateral triangle?
How do you know?
Su mm a ry Cl o su r e
What did you learn today about classifying triangles by their attributes? (pair-share)
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? [email protected]
3rd Grade Measurement and Geometry 2.2 (2Q)
Identify attributes of triangles (e.g., two equal sides for the isosceles
triangle, three equal sides for the equilateral triangle, right angle for
the right triangle).
Lesson to be used by EDI-trained teachers only.
Name __________________________
In d ep en d en t P ra cti c e
Triangles can be classified by their attributes.
• The attributes of a triangle are the sides and angles.
Classify triangles by their attributes.
Step #1: Look at the triangle carefully.
a. Identify equal sides on the triangle. (circle)
Step #2: Classify the triangle by its sides. “The triangle is a(an) ______ triangle because __________.”
A
B
C
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? [email protected]
3rd Grade Measurement and Geometry 2.2 (2Q)
Identify attributes of triangles (e.g., two equal sides for the isosceles
triangle, three equal sides for the equilateral triangle, right angle for
the right triangle).
Lesson to be used by EDI-trained teachers only.
P eri odi c R evi ew 1
Name __________________________
Triangles can be classified by their attributes.
• The attributes of a triangle are the sides and angles.
Classify triangles by their attributes.
Step #1: Look at the triangle carefully.
a. Identify equal sides on the triangle. (circle)
Step #2: Classify the triangle by its sides. “The triangle is a(an) ______ triangle because __________.”
A
B
C
D
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? [email protected]
3rd Grade Measurement and Geometry 2.2 (2Q)
Identify attributes of triangles (e.g., two equal sides for the isosceles
triangle, three equal sides for the equilateral triangle, right angle for
the right triangle).
Lesson to be used by EDI-trained teachers only.
P eri odi c R evi ew 2
Name __________________________
Triangles can be classified by their attributes.
• The attributes of a triangle are the sides and angles.
Classify triangles by their attributes.
Step #1: Look at the triangle carefully.
a. Identify equal sides on the triangle. (circle)
Step #2: Classify the triangle by its sides. “The triangle is a(an) ______ triangle because __________.”
A
B
C
D
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? [email protected]
3rd Grade Measurement and Geometry 2.2 (2Q)
Identify attributes of triangles (e.g., two equal sides for the isosceles
triangle, three equal sides for the equilateral triangle, right angle for
the right triangle).
Lesson to be used by EDI-trained teachers only.
P eri odi c R evi ew 3
Name __________________________
Triangles can be classified by their attributes.
• The attributes of a triangle are the sides and angles.
Classify triangles by their attributes.
Step #1: Look at the triangle carefully.
a. Identify equal sides on the triangle. (circle)
Step #2: Classify the triangle by its sides. “The triangle is a(an) ______ triangle because __________.”
A
B
C
D
DataWORKS Educational Research
(800) 495-1550 • www.dataworks-ed.com
©2012 All rights reserved.
Comments? [email protected]
3rd Grade Measurement and Geometry 2.2 (2Q)
Identify attributes of triangles (e.g., two equal sides for the isosceles
triangle, three equal sides for the equilateral triangle, right angle for
the right triangle).
Lesson to be used by EDI-trained teachers only.