Curated OER
Arc Length and Sectors
Find the length of an arc. High schoolers relate central angles to the area and length of a sector and graph circles on the TI to make predictions.
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Real Numbers: Care Homework #8
In this real numbers worksheet, students perform the given operation with decimals, whole numbers, and fractions. They find the area and perimeter of circles. Students determine the volume of cylinders. This three-page worksheet contains...
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Care Homework #7
In this care homework worksheet, young scholars add, subtract, multiply and divide integers. They multiply and divide fractions. Students complete percent problems and determine the area of polygons. This...
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Pi Mathematics
Students will measure common everyday objects in order to calculate pi. In this measurement lesson plan, students measure the circumference and diameters of objects and fill them into a chart which helps them calculate pi.
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Sports Bag
Students determine an efficient layout of the pattern pieces needed to make a sports bag with given dimensions and specifications. Given a word problem, data set and a diagram, students evaluate the information they have available and...
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Math All Around Us
Students identify real world problems from given story problems. In this story problem lesson, students find places, events or items in the school environment that can be used to create story problems. Students take a picture of the...
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Pi Day
Ninth graders explore the concept of pi in preparation for developing a project for pi day. They examine direct variation, the history of pi, circle circumference and arc length, area and sector area and then consider how these concepts...
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Pi Day (March 14)
Fourth graders determine the value of ? by measuring the circumference and diameter of circular objects such as soup cans, Oreo cookies, etc..
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Approximating Pi
Young scholars approximate Pi using the lower and upper bound for the constant. In this algebra lesson, students work in groups of two to graph a circle and approximate Pi using the circumference. They repeat their estimation until they...
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Care Homework #1: Real Numbers
In this care homework worksheet, students add, subtract, multiply and divide numbers with decimals. They solve problems involving mixed numbers. Students find the area and perimeter of triangles and rectangles. This...
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Garden Variety Geometry
Students prepare to take the GED by reviewing basic math concepts. In this geometry lesson, students review vocabularies such as formula, perimeter, circumference and other important geometric terms. They convert between the English and...
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Exploring the Circumcenter of a Triangle
Students construct the circumcenter of a triangle. For this constructing the circumcenter of a triangle lesson, students construct a triangle using Cabri Jr. Students draw perpendicular bisectors of the sides of the triangle. Students...
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Properties of the Centers of a Triangle
High schoolers investigate properties of the four centers of a triangle and explore a special property of the circumcenter and orthocenter of a triangle. This lesson requires the use of Cabri, Jr.
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Integers and Measurement
In this integers and measurement worksheet, students solve 24 various types of problems as defined. They reduce all fractions to lowest terms. Then, students draw a diagram and show the measurements to the proper power and pi for the...
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Bill's Badge
Learners explore the making of circles and concepts related to them in geometry. The project is inquiry based will focus upon students making their own nametags. The construction is ideal for hands on learners.
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Plain Figures And Measuring Figures
Seventh graders investigate the mathematical concept of a sector. They apply the concept to an example problem and then move into a more complex application. They find the area of the side of a cone. This is done as students calculate...
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Nanofibers: Measuring the Visible to Understand the Invisible
Learners compare the size and shape of tubes that can be measured, to the size and shape of "nanowhiskers" that are too small to see. They practice measuring, calculating and graphing the ratio of circumference to diameter of a circle,...
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"Sir Cumference and the First Round Table" by Cindy Neuschwander
Young scholars analyze characteristics of various 2 dimensional shapes and explore their properties and use various vocabulary terms to discuss geometric relationships.
LABScI
Cell Diffusion and Permeability: The See-Thru Egg Lab
Create a model to study a microscopic phenomenon. The seventh of 12 lessons uses an egg (without its shell) to represent a cell membrane. Using different solutions, learners explore the concept of cell diffusion. They monitor...
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Light Bounce
Students solve problems involving triangles. In this geometry lesson, students apply properties of triangles to find the missing angles and sides. They identify angles of parallel lines cut by a transversal.
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Volume Review
Pupils investigate the concepts of volume for rectangular prisms and spheres. They measure the volume of one balloon and then consider how many breaths it would take to fill the room with balloons. The rectangular prism being measured is...
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Garden Variety Geometry
A home improvement plan can help adult learners preparation for the GED exam. They review vocabulary, prepare diagrams, complete a worksheet, calculate perimeters and analyze how to approach a story problem. They identify many geometry...
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Frequency Tables and Stem-and-Leaf Plots
Students are introduced to the function of frequency tables and stem and leaf plots. In groups, they determine the frequency of their teacher coughing, ringing a bell or raising their hand. To end the instructional activity, they...
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Manipulating Integers
In this algebra worksheet, students manipulate integers to add, subtract, multiply and divide using order of operation. They rewrite word problems and solve for the unknown. There are 24 questions with an answer key.