Curated OER
Classifying Polygons
Seventh graders participate in a polygon hunt. In this polygon instructional activity, 7th graders examine how polygons are alike and different. Students create a Venn diagram and label the sorting circles. Students...
Pennsylvania Department of Education
Creating Polygons
Students describe, make and compare polygons. In this creating polygons instructional activity, students identify properties of quadrilaterals and describe common features of two dimensional shapes.
Curated OER
Lines, Rays, Line Segments, and Planes
Students are introduced to lines, rays, line segments and planes and study the differences between them. They also practice graphing lines, rays, line segments and planes
Curated OER
Perimeter and Area of 2D Shapes
Students find the perimeter and area of circles, triangles, and rectangles. For this perimeter and area lesson, the teacher gives students formulas for each shape and measurement and works through examples on the board. While no creative...
Curated OER
Pyramids on Parade/Nets
Students sketch the shape of three dimensional pyramids using nets. In this geometry lesson, students differentiate a pyramid from other three dimensional shape. They define the attributes of pyramids.
Curated OER
Exploring the Properties of Rectangular Prisms.
Students define properties of rectangular prisms. In this geometry lesson, students identify the relationship between two and three dimensional objects. They use Cabri technology to graph their figures.
Curated OER
Congruence with Robot Gobot
Students identify the properties of solids and polygons. In this geometry instructional activity, students identify the different measurements of a triangle. They use congruence parts and theorem to prove their answer.
Curated OER
Surface Area
Seventh graders explore surface area. They study the difference between two and three-dimensional objects. The teacher leads a discussion about finding the surface area of different size cubes. In pairs, 7th graders use graph paper to...
Curated OER
Gazebo Construction
Learners create and give oral proposals for the construction of a gazebo using a blueprint created with Geometer's Sketchpad. They then build a gazebo model using the blueprints created and provide evidence why it should be selected for...
Curated OER
Geometry, Measurement & Reasoning
Students complete worksheets involving rotational symmetry. In this geometry activity, students complete worksheets to identify rotational symmetry and rotations. They compare and contrast rotated figures. Students examine the...
Curated OER
Investigating Trigonometric Ratios Through Similar Right Triangles.
49Students investigate the properties of right triangles. In this geometry lesson, students differentiate between similar and congruent triangles. They use the Pythagorean Theorem to find the missing angles and sides.
Curated OER
Investigating Trigonometric Ratios Through Similar Right Triangles
Students identify similar and congruent right triangles. In this geometry lesson, students use trigonometric ratios to identify missing sides and angles of a triangle. They differentiate similar and congruent triangles.
Curated OER
Creating Space
Students use simple lines and shapes to draw objects, figures, or animals.They explore the process of printmaking and making multiples, use repetition of simple shapes to create complex images, and inquire about a contemporary artist's...
Curated OER
Explorations with Shapes
Students describe, identify and compare two-dimensional figures. They also name and demonstrate the relative position of objects using directional words. They sort and compare two-dimensional figures and three-dimensional objects...
Curated OER
Cones, Cylinders, Spheres
Students classify polygons by name and shape. For this geometry lesson, students identify the lateral surface of each conic. They differentiate between cones, cylinders and spheres.
Curated OER
More Prisms/Nets
Students calculate the volume and surface are of three-dimensional shapes. In this geometry lesson, students use the nets to prove their calculations of shapes. They identify the different parts of a solid using the nets.
Curated OER
Celebrating the Day of the Dead
Students explore the artwork of the Indo-Hispanic holiday of Day of the Dead. They view images, define key vocabulary terms, and plan and create a two- and three-dimensional sculptural figure.
Curated OER
Surface Area of Cones
Students find the surface area of cones. In this geometry lesson, students calculate the dimensions of each three-dimensional shape and use the correct formula to solve the problem. They relate concepts of cones to the real world.
Curated OER
Exploring Volume of Cylinders
Tenth graders investigate the volume of a cylinder. In this geometry lesson, 10th graders create three-dimensional cylinders and use a ruler to determine the dimensions. The lesson progresses to the use of the formula to find...
Improving Measurement and Geometry in Elementary Schools
Rep Tiles
In addition to the catchy title, this lesson plan provides upper graders an opportunity to more closely scrutinize the attributes of plane figures. In particular, they focus on the similarity of different shapes. Both whole-class and...
Curated OER
Bubbles Everywhere!
Eighth graders use concrete and graphic models to derive formulas for finding perimeter, area, surface area, circumference, and volume of two- and three-dimensional shapes. This lesson is a fun way to practice measurement and circle and...
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Play Dough Day
Twelfth graders build a model of the following figures with the base from column I and the cross-section from column II. Draw the base with labeled axes on the graph paper and construct the figure on top of the base with the play dough...
Curated OER
A Perpendicular Pilgrimage
Ninth graders design a safe passage through a 2-D obstacle. In this geometric math lesson, 9th graders engage in a hands on activity to better understand the concept of geometric and algebraic perpendicularity. Students will work in...
Curated OER
Landscape Book
Students create a three-dimensional book about landscapes. They must show their understanding of shape, color and balance.