D. Bean
Foundations of Mathematics Lesson Plan
Name: Daneika Bean
Course: Foundations of Mathematics
Department: Mathematics
Year Level: S1
Week: 7
Timeline: Two 50 minute lessons
Materials:
 Mathematics Application and
Key Terms:
 Area
 Three-Dimensional
 Faces
 Net
 Prisms (Rectangular/ Cuboid,
Concepts textbook
 Ruler
 3-Dimensional Models
 Examples of Nets
Triangular, Cube,and Cylinder)
D. Bean
Foundations of Mathematics Lesson Plan
INITIAL TEACHING
Lesson Objectives: All Students Will Be Able To (A.S.W.B.A.T): visualize the net of a rectangular prism in
order to calculate the area of each face; hence use the sum to determine the surface area of
the prism.
Do Now Activity: Enrichment Worksheets 9-3 “Nets and 3-D Figures
Enrichment Worksheet 9-5 “Surface Area of Pyramids and Prisms”
Motivate and Activate: Discuss the various types of 3-D figures on the Enrichment Worksheets and
encourage students to build their own models to verify their answers.
Instructional strategies: Brainstorming, Hands-On Applications, Illustrations and Cooperative Learning.
PRACTICE
Guided Practice Activities:
SURFACE AREA – The sum of the areas of all the surfaces/faces on a three-dimensional figure.
Surface Area Calculations
SURFACE AREA OF RECTANGULAR PRISMS
Top: A = l x w
= 5cm x 4cm
= 20cm2
2
20cm x 2 = 40cm2 (top & bottom)
3cm BACK
BOTTOM
4cm
3cm
FRONT 3cm
TOP
4cm
4cm
5cm
5cm
Surface Area Calculations using Formula
S.A. = 2(lw) + 2(lh) + 2(wh)
= 2(5x4) + 2(5x3) + 2(4x3)
= 2(20) + 2(15) + 2 (12)
= 40
+ 30
+ 24
2
= 94cm
Front: A = l x w
= 5cm x 3cm
= 15cm2
2
15cm x 2 = 30cm2 (front & back)
1 Side: A = l x w
= 4cm x 3cm
= 12cm2
2
12cm x 2 = 24cm2 (both sides)
Surface Area (S.A.) = 40cm2 + 30cm2 + 24cm2
= 94cm2
Independent Practice Activities:
A few questions will be written on the board for students to try using either the formula or complete steps.
Homework: Mathematics Applications and Concepts textbook pgs 533 & 534 #’s 4- 14
FORMATIVE ASSESSMENTS
Students will be assessed on their ability to: Accurately determine the length, width and height of rectangular
prism, and the length and width of each face in order to calculate the Surface Area of the Rectangular Prism
Enrichments:


Correctives:
Students will make their own Rectangular Prism
Problem Solving Questions
from a net and use it to calculate the Surface Area.
Calculations involving Cubes
Closure: Review Nets, Area of Rectangles, Dimensions (length, width, and height of a Rectangular Prism,
Calculating Surface Area of Rectangular Prisms, and introduce Surface Area of Triangular Prisms.