Curated OER
An Introduction to Pi and the Area of a Circle
Young scholars explore measurements  of a circle. In this lesson about circumference and radius, students practice calculating measurements of a circle. Young scholars estimate, calculate, and practice with graphing all while learning...
Curated OER
Circles and Pi
Learners identify the relationship between the radius and Pi. In this geometry lesson, students calculate the circumference and area of a circle. They create visuals to help them see how the circumference relates to Pi.
Curated OER
History and the Approximations of pi
Middle schoolers investigate Pi. In this mathematics lesson, learners discuss the history of Pi and determine how the approximation of Pi was discovered.
Inside Mathematics
Squares and Circles
It's all about lines when going around. Pupils graph the relationship between the length of a side of a square and its perimeter. Class members explain the origin in context of the side length and perimeter. They compare the graph to the...
Houghton Mifflin Harcourt
Developing Formulas for Circles and Regular Polygons
Formulas and procedures for finding the area and circumference are not provided on this handout, so it will be best used as a practice of already-acquired skills. It is a well-rounded assignment, however, as it includes diagrams,...
Rainforest Alliance
Trees and Carbon
You'll find everything but the kitchen sink here ... or just a carbon sink. In the activity, pairs or groups of middle school learners go outside and measure a tree's circumference and height to estimate its carbon storage potential and...
Curated OER
Basketball Measurements
In this basketball court measurements worksheet, students complete16 various types of problems using the illustrated basketball court at the bottom of the sheet. They find the diameter and radius of the smaller jump circle on the court....
Curated OER
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.
Curated OER
Radius, Diameter and Circumference of Circles
In this circles activity, learners calculate either the radius, diameter and circumference of a set of 4 circles, one measurement is given for each circle, students calculate the remaining 2. 
Curated OER
Care Homework #2
In this Care Homework worksheet, students solve a variety of multiple digit addition, subtraction, multiplication, and division problems that include fractions, decimals, and percentages. They demonstrate knowledge of geometric formulas...
Curated OER
Wheeling Around
Eighth graders explore the characteristics of a circle and the formulas to find circumference. They use a bicycle wheel to determine the circumference around a wheel. They utilize a worksheet imbedded in this plan which has a variety of...
Curated OER
Spaghetti Measure
Young scholars receive a copy of a "Spaghetti Measure" task sheet along with the scoring rubric. Students preview the task and the rubric prior to starting the task. tudeThey determine the circumference of a circle of spaghetti that will...
Curated OER
"Where Does Pi Come From?"
Fifth graders explore geometry by exploring Pi. In this circle measurement instructional activity, 5th graders identify the relationship between the radius, diameter and circumference of a circle and how Pi is the key to unlocking any...
Curated OER
Circles
In this geometry worksheet, 10th graders determine the circumference and area of a circle given either the diameter or the radius. The one page interactive worksheet contains ten questions. Answers and hints are included. 
Curated OER
One-To-One: Consumer Math
In this consumer math activity, students count the number of butterflies in a group and draw a line to match the same number of flowers in a group. Students match four groups so that there is the same number of butterflies as flowers in...
Curated OER
MCC - 1106 Word Search
Use this geometry worksheet to have learners locate and identify various vocabulary terms related to mathematics. There are seven words/phrases located in the puzzle.
Curated OER
Calculate the Area
In this area of a circle worksheet, 6th graders must calculate the area of 5 circles given either the radius or diameter. Students must write the area on the line provided and a blank space is provided for students to work out the...
Curated OER
Discovering pi
Tenth graders investigate the history of Pi and how it relates to circles. In this geometry lesson, 10th graders measure the circumference of a circle and the diameter of a circle. They relate these measurements to the number of Pi or 3.14
Curated OER
Geometry, Pi, and Ancient Civilizations
By working together, pairs of learners will complete a Pi webquest. Using the internet, they examine the ways people in the Ancient Civilizations of Egypt, Babylonia and Greece used Pi. To end the lesson, they review the concepts of...
Curated OER
Creating a Basal Area Measuring Tape
High schoolers use formulas to design and create a table.  In this calculations lesson students create basal measuring tapes that will be used to measure woodlot stocking levels. 
Curated OER
Geometry of Circles: Week 7
In this circle worksheet, students determine the number of degrees in a minor arc, find the area of a circle, find the area of a shaded region.  This two-page worksheet contains six problems.
Curated OER
Angles and Arcs
In this angles and arcs worksheet, 10th graders solve 8 different problems that relate to determining the measure of various angles and arcs of a circle. First, they define a central angle and the difference between a major and minor...
Curated OER
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...
Curated OER
Our School - Our Trees
Sixth graders observe school ground trees planted nearly 3 decades ago.  For this ecology lesson, 6th graders examine a group of trees planted near their campus and measure the diameter, circumference and growth of the tree compared...