Curated OER
Interior Designer for a Day
Seventh graders organize a 20 x 17 room with a given set of furniture pieces. Arrangement is to be based on maximum comfort and practicality. This lesson is a good way to teach and reinforce the mathematical concept of area.
Curated OER
THE AREA OF A CIRCLE
Young scholars examine the relationship between circumference and diameter and how to use the formula to find the area of a circle. In this circle lesson students divide into groups and complete an activity.
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Triangle Explorer
Students calculate the area of triangles using a variety of materials including computer applets.
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Karen's Tiles
Students investigate how perimeter changes as area changes to see the relation between area and perimeter for similar shapes. They then students answer the question if the area of the rectangle increase, does its perimeter have to increase?
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Rectangular Gardens
Learners create a rectangular garden using paper and tiles. In this geometry lesson, students investigate the largest possible rectangle that can be created given specific boundaries. They use grid paper to draw the rectangles creating a...
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Math and Architectural Design in Relation to Rebuilding The World Trade Center
Young scholars discover building plans and practice reading measurements. In this architectural design instructional activity, students investigate the areas of the specific World Trade Center locations that need to be rebuilt and...
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Area and Perimeter
Students participate in a hands-on activity that shows the independence of perimeter and area for simple irregular figures.
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Exploring Area
Fifth graders explore the concept of area using the geometry of selected objects. The laboratory for this experience is the classroom. The lesson focuses upon the objects that have four sides like squares and rectangles.
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Area of Solids
Students find the area of rectangular solids and cylinders by cutting them into flat pieces and adding the areas.
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The Geometry of Means
In this geometry worksheet, students are given a rectangle and a square. They verify ratios when given equal perimeters or areas. Students are given adjacent squares. They find the distance between the centers, and identify the means...
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"Polly"gon Pockets
Explore polygons with your elementary learners. Divide the class in 12 to configure the polygon puzzle before them. They list the attributes of each type of polygon they see, and if there's time, they jump on the interactive website...
Curated OER
Scale Drawing: Insulating Another Attic
Give your future household repair specialists a real-life chance to apply the concepts of ratio and proportion. Using a scale drawing, they calculate the missing dimensions of two walls of a compound-shaped attic. They then figure how...
Curated OER
Mondrian: Rectangles, Squares, & Balance, Oh My!
Learners discover through guided, online research the life and works of Piet Mondrian in this technology-based Art lesson for the 2nd and 3rd grades. Emphasis is placed on the student creation of "Mondrian"-like drawings using Appleworks 6.
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Introduction to Fractals: Geometric Fractals
Learners study and observe the patterns made by the areas of the Sierpinski Triangle. Students use the computer to draw two or three iterations to discover the number patterns. Learners complete worksheets based on Geometric Fractals.
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Word Problems: Geometry
Students solve word problems by using basic geometry. In this geometry lesson, students use geometric formulas to find the perimeter, area, and volume of objects. Students complete a worksheet.
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Area of Composite Figure.
Tenth graders predict the shape of a geometric figure in 3D. In this geometry lesson plan, 10th graders construct 3D shapes to perfect their knowledge of measuring and predicting. This assignment is also available as an online...
Texas Instruments
The Determinant of a Matrix
Learners calculate the determinant. In this algebra lesson, students find the determinant and use to calculate the area of a triangle. They calculate the area of a quadrilateral in a plane.
Utah Education Network (UEN)
If the Shape Fits
Geometers juggle the idea of polygons. Using a game and manipulatives, they make trapezoids and irregular polygons. They review the algorithms for finding the areas of squares and rectangles. On day one, they find the area of trapezoids,...
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Volume
Students, after reviewing the measuring of the lengths of sides of different shapes along with the calculation of their perimeters and areas, encounter what it means by the 'perimeter' of a polygon. They practice measuring units of...
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Factoring Trinomials
Students factor trinomials and other quadratic functions. In this algebra instructional activity, students solve trinomials containing negative and positive coefficients. They factor quadratics of difference squares as well as regular...
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Effects of Changing Dimensions Proportionally
In this geometry worksheet, 10th graders examine the effect of changing the dimensions of a figure proportionally on the perimeter, circumference, and area. The one page worksheet contains six problems. Answers are...
Curated OER
Graphing Data
Students graph lines in a coordinate plane. In this geometry instructional activity, students graph lines on a coordinate plane, and identify the slope. They calculate the volume, area and perimeters of the shapes created on a coordinate...
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Building Shapes From Numbers
Students experience how to illustrate some of the many connections between number and geometry. Through this 2-3 day focus on square numbers and triangular numbers, students make connections among mathematical topics.
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Travel Triangles
Students demonstrate and understanding of the three types of angles using triangles and quadrilaterals. In this angles lesson plan, students learn about acute, obtuse and right angles. They use cut-outs to find the areas of triangles and...