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Learning About Triangles
Upper graders label four triangles and fill in the labels correctly. They draw three original triangles and answer the questions about them.
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2-D Shapes: properties Review
Play to review the various properties that help us identify 2-D shapes. Five different shapes are presented first by their properties only, these clues are then used to identify each shape. This is a great warm up activity, especially...
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Ruler and Compass Constructions
Fourth and fifth graders examine how to construct perpendicular lines and to bisect angles using rulers and compasses in this unit of lessons. They design a number of polygons using these methods.
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Area of Regular Quadrilaterals
Can your class calculate the area of a regular quadrilateral? They can now, with this handy presentation which provides an explanation, the formula, and examples of finding the area of a regular 2-D shape.
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Zome System
Get hundreds of interactive activity plans using the Zome Modeling System. Among dozens of lessons, a first exposure to similar triangles can be very visual for the learner. Here, young geometers explore the number of different shapes...
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Quadrilaterals: 2 dimensional shapes with 4 straight sides
Which shapes are considered quadrilaterals? View and learn that two dimensional shapes with four straight sides are considered quadrilateral. The rhombus, parallelogram, rectangle, and trapezium are only few of the fabulous shapes shown...
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2-D Shapes Show
As the green squares are removed, a little piece of the puzzle is revealed. What is it? A square, a triangle, a cow? Have your class guess their way to identifying five different plane shapes.
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2-D Shape Recognition
How many of 2-D or plane shapes can your class identify? Can they get them all? Little learners view and review the names of nine different shapes, such as rectangle, square, triangle, and circle, to name a few.
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2-D polygons
A hands-on activity uses the Zome modeling system, and helps young geometers either learn or review their knowledge of polygons. Students build as many different 2-dimensional polygons as possible: triangle, square, rectangle, pentagon,...
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Finding Areas of Polygons and Circles
In this math worksheet, young scholars find the areas for the shapes. They apply the appropriate formula for each shape that is drawn and in the word problems.
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Area and Perimeter Quiz
In this mathematics worksheet, students give the area and perimeter of each polygon illustrated on the sheet. There are six different polygons to measure on the sheet.
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Pick's Theorem
In this Pick's Theorem worksheet, students solve and graph 6 different problems that include using Pick's Theorem to solve. First, they use Pick's Theorem to determine the area of the shapes given as well as their own shapes drawn. Then,...
Alabama Learning Exchange
Polygon Perimeters
What are polygons? Learners find the perimeter of various geometric figures that the teacher has drawn in chalk on the sidewalk. A worksheet to record their measurements is provided. Get your third graders outside and exploring the world...
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Area Applet
Elementary math classes calculate the area of a shape and explain the correlation between the size of the perimeter and the areas that can be contained within that perimeter. They also explain the effect the shape of the perimeter has on...
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Transportation from Around the World
Take a look at how people around the world get from here to there. Each slide provides an image and description of various types of transportation found around the globe. In Venice they use a boat, in San Francisco they use a Trolley...
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Symmetry and Geometric Shapes on Campus
Build on your learners' previous knowledge of geometric shapes and symmetrical figures. Then set them out to take photos of geometric shapes on campus. They assess whether the photos contain symmetry or not.
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Independent Practice 2: Recognizing Similar and Congruent
Learners examine given figures and determine if they are similar and congruent or similar and not congruent. Afterward, they match congruent figures drawn in a table. This one-page instructional activity contains 12 problems.
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Know Your Polygons!
Students identify and categorize different polygons. For this polygons lesson plan, students research and identify properties of polygons, identify different polygon shapes, and categorize different triangles and quadrilaterals.
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Angles - Unlocking Geometry
Students investigate the concept of angles and how they are used in geometry. They construct polygons using various types of angles and then classify them according to their physical properties. Students use a computer program in order...
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Sums of angles in polygons
In this sums of angles in polygons worksheet, 5th graders find the value of x which is the angle that is not given in a polygon. Students complete 4 problems.
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Similar Situations
Students explore intersecting lines. In this intersecting lines lesson, students investigate shapes consisting of parallel, perpendicular, and similar lines. Students investigate these lines in shapes around them.
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Connecting With Coordinates
Play a coordinates game to encourage collaborative learning and grid use! Learners plot points on grids and play a game that challenges them to locate a specific point on a coordinate grid by using horizontal and vertical movements.
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Area And Perimeter Using Pentominoes
Third graders engage in an enrichment lesson exploring the concepts of area and perimeter. They construct new pentominoes that are 3 times the size of normal ones and then identify the area and perimeter measurements. They then create a...
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Perimeter All Around
Students explore perimeter and area of regular and irregular polygons. They experiment with color squares and create different arrangements using the same number squares. Then they compare the area and perimeter measurements of each.