Course: 7th Grade Math
DETAIL LESSON PLAN
Wednesday, February 22 / Thursday, February 23
Student Objective
(Obj. 3b)
TSW… identify three dimensional figures from nets.
Lesson
8-9 Three-Dimensional Figures
Textbook Pages: 414-418
Extra Resources
Geometric solids.
Homework
Test next class. Complete and review your study guide.
Last Night’s Homework
3D Worksheet (10 problems)
Bellwork
9 weeks study guide problem numbers: ___________ - ___________
Prior Knowledge
 Last class, we learned to identify 2D and 3D figures.
Anticipatory Set
 Today, we will build upon that knowledge of 3D figures and learn about something called “Nets”.
 Show PowerPoint  “What in the world are nets?”
Teacher Input
 Review bellwork
 Review homework
 Show PowerPoint “What in the World are Nets?” to lead into today’s lesson on nets.
 Pass out student notes
 Use the geometric solids to illustrate what each net looks like as a 2D figure vs a 3D figure.
 Have students work you-try problems (independently).
 Classwork: Complete study guide (math to music)
Assessment
Observation and questioning.
Closure
1) What is a net? 2-D pattern that you can form into a 3-D figure.
2) Show examples of nets and have students name the 3D solid.
Student Notes
Lesson 8-9 Nets
Textbook Pages 414 – 419
A Net is a two-dimensional pattern that you can fold to form a 3-dimensional shape.
Example: Figure 1 and Figure 2 below show two possible nets for a cube.
Figure 1
Figure 2
You try: Name the three dimensional figure from each net.
Answer Key
Independent Practice
Independent Practice
Answer Key
Name: _____Answer Key_________________
Period: ___________
Date: _____________
3D Figures / Nets
Part 1
2 Dimensional Figures
1) How many sides does each of the following figures have?
__4__ Quadrilateral
_10__ Decagon
__8__ Octagon
__6__ Hexagon
_
9__ Nonagon
__3__ Triangle
__7__ Heptagon
__5__ Pentagon
Part 2
3 Dimensional Figures
2) Use the word bank to match the following 3-D figures.
A) Triangular Prism
____D______
Cylinder
3)
B) Pentagonal Pryamid
____B________
_____C_________
Pentagonal Pyramid
Hexagonal Prism
D) Cylinder
______E_________
Cone
E) Cone
_____A________
Triangular Prism
Identify the number of faces, verticies, and edges of the following figure.
Faces: ____4______ Vertices:
4)
C) Hexagonal Prism
_____4______ Edges: ____6_____
Which 3-D solid figure exactly 6 vertices?
Pentagonal pyramid
(Hint: Don’t forget pyramids have a vertex on the top!)
Hexagonal pyramid
5)
What properties describe this 3-D shape?
__9__ Faces __14__Vertices
__21__Edges
What is the shape of the base? ____Heptagon______
What is the name of the shape? ____Heptagonal Prism______
6)
What properties describe this 3-D shape?
__6__ Faces __6__Vertices __10__Edges
What is the shape of the base? ____Pentagon______
What is the name of the shape? ____Pentagonal Pyramid______
Part 3
7)
Nets
Use the word bank to match the following nets to their 3-D figures.
A) Triangular Prism
B) Pentagonal Prism
_____A_____
_____E_______
Triangular Prism
Cone
8)
C) Cylinder
____C________
Cylinder
D) Triangular Pyramid
_____D_______
Triangular Pyramid
Which solid does the following net represent?
A.
B.
C.
D.
E) Cone
____B_______
Pentagonal Prism
Name: ________________________________
Period: ___________
Date: _____________
3D Figures / Nets
Part 1
2 Dimensional Figures
1) How many sides does each of the following figures have?
_____ Quadrilateral
_____ Hexagon
_____ Pentagon
_____ Decagon
_____ Nonagon
_____ Triangle
Part 2
_____ Octagon
_____ Heptagon
3 Dimensional Figures
2) Use the word bank to match the following 3-D figures.
A) Triangular Prism
___________
3)
B) Pentagonal Pryamid
_____________
_______________
D) Cylinder
________________
E) Cone
______________
Identify the number of faces, verticies, and edges of the following figure.
Faces: __________ Vertices:
4)
C) Hexagonal Prism
___________ Edges: _________
Which 3-D solid figure exactly 6 vertices?
Pentagonal Pyramid
or
(Hint: Don’t forget pyramids have a vertex on the top!)
Hexagonal Pyramid
5)
What properties describe this 3-D shape?
______ Faces ______Vertices
______Edges
What is the shape of the base? __________________
What is the name of the shape? __________________________
6)
What properties describe this 3-D shape?
______ Faces ______Vertices
______Edges
What is the shape of the base? __________________
What is the name of the shape? __________________________
Part 3
7)
Nets
Use the word bank to match the following nets to their 3-D figures.
A) Triangular Prism
_____________
8)
B) Pentagonal Prism
______________
C) Cylinder
_______________
D) Triangular Pyramid
_______________
Which solid does the following net represent?
A.
B.
C.
D.
E) Cone
_______________