Download Perimeter lesson plan

D. Bean
Foundations of Mathematics Lesson Plan
Name: Daneika Bean
Course: Foundations of Mathematics
Department: Mathematics
Year Level: S1
Week: 1
Timeline: Two 50 minute lessons
Materials:
Key Terms:
 Geometry
 Measurement
 Perimeter
 Units
 Sum
 Plane Figures/Polygon
(regular and irregular)
 Congruent
 Mathematics Connections
Textbook
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Calculator
String
Ruler
Writing tools (3minimum)
D. Bean
Foundations of Mathematics Lesson Plan
INITIAL TEACHING
Lesson Objectives: All Students Will Be Able To (A.S.W.B.A.T): Determine the perimeter of various regular
and irregular plane figures. Students will also be able to apply the concepts of perimeter to
solve problems.
Do Now Activity: Take out at least 3 writing tools. Connect them together to make a closed figure and
determine the PERIMETER the best way you know how. A ruler and string is provided for your use.
Motivate and Activate: Discuss the various methods students used to determine the perimeter of their
polygon. Since many students may make triangles or quadrilaterals, this is an opportunity to briefly touch on
the different types of polygons, in particular the various types of triangles (equilateral, isosceles, scalene)
and quadrilaterals (square, rectangle, rhombus, trapezoid, parallelogram) depending on if they used
pens/pencils of the same length.
Instructional strategies: Brainstorming, Hands-On Applications, Illustrations and Cooperative Learning.
PRACTICE
Guided Practice Activities: Review the key terms:
PERIMETER – The distance AROUND any polygon. It is determined by calculating the SUM of all sides.
SUM – the answer from adding numbers.
PLANE FIGURE / POLYGON – a closed, flat, 2-dimensional shape(from Triangle to Decagon)
REGULAR FIGURE – the sides and/or angles are congruent
IRREGULAR FIGURE – the sides and/or angles are NOT congruent
CONGRUENT - the sides and/or angles are the SAME / EQUAL.
If P = 20cm and the width of this rectangle is 2cm, what is the measurement of the missing sides?
20cm – (2cm +2cm) = 16cm remaining
Therefore 16 ÷ 2 = 8cm
The sides of the rectangle are width  2cm; and length  8cm
If P = 42in for a hexagon with all congruent sides, what is the measurement of each side?
42 ÷ 6 = 7cm
The measurement of each side is 7cm
Independent Practice Activities: Perimeter Practice Worksheet 2-8
Homework: Word Problems from Mathematics Connections Textbook, #’s 13 – 21 p.59
FORMATIVE ASSESSMENTS
Students will be assessed on their ability to:
1) Collaboratively use educated reasoning skill to determine how to use other tools to determine Perimeter of
various shapes
2) Progressively move towards completing a comprehensive written assignment on Perimeter and Circumference
Enrichments:
Correctives:
Problems solving questions:
Ex. Draw and label as many Isosceles Triangles as
possible that have a perimeter of 10cm.
String is used to show students that perimeter is
the distance AROUND a figure. Therefore the
base of a triangle for the roof of a house would not
be included when determining the perimeter of the
house.
Closure: Review Key Terms and then use them to introduce the similar concept of Circumference of Circles.