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Geometric Figures and Applications
High schoolers study geometric figures. They use graph paper or Geometer's Sketchpad to construct and decorate geometric shapes, and also create a 3-D polygon using construction paper and a given template.
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Coordinate Plane Worksheets - Area of Rectangle
In this online math activity, students calculate the area of a variety of rectangles given the measure of their vertices. This excellent resource allows the students to check their answers, and to get "hints" should they run into...
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Folding Circles
Students investigate properties of circles. In this geometry lesson, students differentiate between similarity and congruence as they observe polygons. They investigate properties of two and three dimensional shape.
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Lengths of Horizontal and Vertical Line Segments
Use this lengths of horizontal and vertical line segments practice instructional activity to have learners sharpen their problem solving skills as they solve six story problems.
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Goldilocks and the Coordinate Grids
Where this lesson idea is lacking in materials, it makes up for with creativity! Using "Goldilocks and the Three Bears" as the background, mathematicians plot points on a coordinate grid to create props for the story. The polygons all...
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Area
Learners solve and complete four various types of problems. First, they show on the diagram why the area of a triangle is given by a formula. Then, pupils find the area of each triangle and parallelogram illustrated, They also circle the...
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A Rectangular Prism and Its Net
Identify the nets for prisms and other geometric shapes. Learners calculate the surface area of the rectangular prism then sketch the shapes of prisms and other polygons. Unfolded cereal boxes are used as a visual aid, great idea!
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The Trapping of Trapezoids
This is a nice hands-on activity where young geometers create trapezoids and calculate their area by looking at areas of quadrilaterals and triangles.
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The Pythagorean Theorem
Young scholars research Pythagoras and learn how to apply his theorem. They solve real life problems using the theorem and demonstrate knowledge of exponents, equations, and radicals. Students include diagrams in their research papers.
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Finding Volume of Similar Figures
Upper elementary and middle schoolers examine the Volumes of Similar Figures. They investigate the relationship between corresponding sides and evaluate the volume of similar figures. Pupils record their findings on various activity...
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Volume of a Rectangular Prism
Children use the length, width, and height of an object to calculate the volume of a rectangular prism. They observe how to multiply three numbers at a time, and define volume. Pupils observe as the teacher demonstrates how to determine...
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Cube Coloring Problem
Upper elementary and middle schoolers describe the various features of unit cubes, such as edges, corners, and faces. They also discuss how to represent measurements of a cube using exponents before engaging in various thinking and...
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Net "Working"
Upper elementary and middle schoolers explore the properties of various polygons. They use video, resource links, and engage in hands-on activities in order to construct geometric nets. This fine plan should lead to increased...
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Regents High School Examination GEOMETRY 2009
The University of New York Regents High School Exam for geometry from August 2009 is comprehensive in scope with 38 questions over 22 pages. Geometers can assess their mastery of core content with a combination of multiple choice and...
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Class of Gold
How can you see a number in nature? Here, learners discover both Fibonacci numbers and the golden ratio by exploring a number of different resources. Note: Some of the resources are older and may be missing some of the links, but the...
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Try Tessellation
Most middle schoolers probably feel that quilting is at best an activity left to their grandmothers. This lesson plan uses the Zome modeling system to get them to realize how shapes in quilting are really tessellations and repeating...
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A Fibonacci Primer
Upper graders explore the Fibonacci sequence. They examine the characteristics of the Fibonacci sequence, list the properties of the sequence and determine how it connects to Pythagorean Triples. Related thinking questions are included.
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Square Roots Using a Carpenter's Square
Students calculate the square root of a given number using carpenter's square measurements. In this math lesson, students relate this method on the Pythagorean theorem. They answer practice problems after the exploration activity,
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Gradients of Parallel Line Segments
In this gradient worksheet, students draw line segments and determine if they are parallel. They plot points on a coordinate plane and calculate the gradient of each created line. This five-page worksheet contains 8 multi-step problems....
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Foul Shots
In this secondary mathematics worksheet, students determine a basketball player’s percent accuracy and the number of foul shots he must make in order to raise his average to 50%. The one page worksheet contains one problem with the...
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Picture Hunt
Learners draw a dot for each of the ordered pairs on the page. They then connect the dots to see what the completed picture is. There are two problems on this worksheet.
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Classify Triangles
Here is a classifying triangles practice worksheet in which learners sharpen their problem solving skills as they solve six story problems.
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Acute Triangles
Learners study acute triangles. They measure angles using a protractor, then classify the triangles as either right, obtuse, or acute. Everyone creates a design for a Navajo rug using only acute triangles.
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The Right Stuff
Studentsare introduced to the Pythagorean Theorem by exploring right triangles and the squares built on each side. They apply the Pythagorean Theorem to real-world problems. Students u se informal and nonformal arguments of proof (i.e.,...