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Final Project in ICT Submitted by: Lorelyn M. Ramos

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Overview Goal of the lessons : To find the area of a square and rectangle. Pedagogical approach : Constructivism Skills/knowledge : Identify rectangle and square in the classroom. Relate the characteristics of different figures. Understand the concept of area. Derive the formula in finding the area of rectangle and square. Find the area of a figure in square units. Solve word problems. Kinds of technology tools: –1 Laptop with internet connection –1 LCD projection system –Power Point Presentation –You Tube – Individual and group activity sheets –Other manipulative objects such as Geo board and paper folding

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Objectives 1. Identify square and rectangle in the classroom. 2. Relate the characteristics of different figures with the use of tangram. 3. Visualized and understand the concept of area. 4. Derive the formula in finding the area of square and rectangle. 5. Find the area of a figure in square units. 6. Solve word problems.

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Subject Matter Finding the Area of a Square and Rectangle

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Materials Laptop with internet connection LCD projection system Power Point Presentation You Tube Individual and group activity sheets Manipulative such as paper and tangram Geo board

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Motivation This is a black board. What is the shape of a black board? Can you give me more example an a rectangle? (door, window, table etc.) This is a picture frame. What is the shape of a picture frame? Can you give me more example an a square? (frame, ceiling, chart, etc.)

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Motivation What have you noticed with a rectangle? - It has two pairs of equal sides What have you noticed with a square? - It has four equal sides Compare a rectangle and a square. - Rectangle has two pairs of equal sides while a square has four equal sides

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Presentation Solve the following using a geo board. 1. a. Make a 4 x 4 square in a geo board. b. Let the pupils count the number of square inside the square. (16 square units) 2.a. Make a 5 x 6 rectangle in a geo board. b. Let the pupils count the number of square inside a rectangle. (30 square units) ( For computer based geo board please click the link below) http://www.mathplayground.com/geoboard.html

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Presentation Let the pupils watch the following u-tube videos. Finding the area of a Square http://www.youtube.com/watch?v=ei5FAinKXoY&feature=channel Finding the area of a Rectangle http://www.youtube.com/watch?v=ECJfSyg_Obo&feature=channel

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Activity Constructing Your Own Set of Tangrams Materials : a rectangular piece of paper suitable for folding a pair of scissors a ruler (optional) Activities : A complete set of tangrams consists of seven pieces:complete set of tangrams a small square two small congruent triangles two large congruent triangles a medium-size triangle a parallelogram You can make your own set of tangrams from a single piece of paper.

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Activity Just follow these simple steps: 1. Fold a rectangular piece of paper 2. Cut the square into two triangles. so that a square is formed. Cut off the extra flap. 3. Take one triangle and fold it in half. Cut the triangle along the fold into two smaller triangles.

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Activity 4. Take the other triangle and 5. Fold the trapezoid in half and fold again. crease it in the middle. Cut along both folds. Fold the corner of the triangle opposite the crease and cut.

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Activity 6. Fold the remaining small trapezoid and cut it in two. Tangrams are a puzzle that help develop spatial-visualization skills, but they may also be used to introduce or reinforce geometrical concepts such as congruency, similarity, symmetry, and so forth. This unit for grades 4 through 6 uses tangrams to compute the area of polygons without formulas. In the process of doing so, the terms congruent and similar are introduced.

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Group Activity Tangram Activities Objectives a better understanding of area without formulas the ability to compute the area of polygons by decomposition a familiarity with the names of certain polygons (e.g., rectangle, trapezoid, and pentagon) the meaning of the term similar to develop geometric intuition Materials a package of tangrams for each student a student notebook a sharp pencil a ruler an overhead projector

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Group Activity Primary activities 1.The student can compute the area of any polygon constructed from tangrams. Make a square with the medium-size triangle and the two small congruent triangles. What is the area of this square? How do you know? Sketch the square in your notebook and record its area. 2. Make a rectangle with the parallelogram and the two small congruent triangles. What is the area of this rectangle? How do you know? Sketch the rectangle in your notebook and record its area.

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Worksheets Printable Worksheet Finding the Area of Square and Rectangle http://lessonplancentral.com/lessons/Math/Math_Worksheets/Area/ http://www.atozteacherstuff.com/pages/4565.shtml http://www.teach-nology.com/worksheets/math/area/ver1/ http://www.superteacherworksheets.com/geometry/area-multiply.pdf

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Fixing Skills Find the area of the following objects below. 1 m 3 m 2 m 30cm 2m 5 m 80 cm 2m

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Evaluation Solve the following word problem: 1.A square lot measure 14 meters in one side. What is the area of the lot? 2.A rectangular garden has a width of 20 meters and a length of 35 meters. What is the area of the garden? 3.A quadrangle has a perimeter of 80 meters. If the shorter side of the quadrangle measures 20 meters. What is the area of the quadrangle? 4.A floor area measures 15 meters by 12 meters. How many tiles that measures 1 meter by 1 meter is needed to cover the whole floor area? 5.A rectangular measures 18 meters by 9 meters. What is the area?

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