Dick Blick Art Materials
Start with a Circle...
The Golden Ratio. The Divine Proportion. Yup. It's math and art blended into one colorful activity. Young artists combine colored tissue paper circles and parts of circles to create geometric patterns. As a bonus, kids get to figure out...
Noyce Foundation
Ducklings
The class gets their mean and median all in a row with an assessment task that uses a population of ducklings to work with data displays and measures of central tendency. Pupils create a frequency chart and calculate the mean and median....
Beacon Learning Center
The Fun Polygon
Junior geometers use hands-on manipulatives to explore and describe the properties and attributes of a fundamental polygon, the triangle. They learn different kinds of angles and their measurements. This well-written lesson plan provides...
Curated OER
Crop Circles
Students calculate the area and circumference of a circle. In this geometry instructional activity, students solve word problems with circles and create formulas to calculate the area. They find the rate and complex area of a circle.
Curated OER
Parts of the Circle
In this geometry skills worksheet, students respond to 3 questions that require them to examine the part of circles and identify them as diameters, chords, radii, or centers.
Curated OER
Parts of the Circle
In this geometry skills worksheet, students examine 3 labeled circles and identify the noted items as diameters, chords, radii, or centers.
Curated OER
The Circle's Measure
Students explore circumference and diameter. In this math lesson, students apply their knowledge of circumference and diameter to solve mathematical riddles. Students apply this knowledge to find circumference and diameter of various...
Curated OER
Topology and Geomery
Students relate topology to polygons. In this geometry activity, students make the connection between different shapes and topologically equivalent relationships. They use Mobius strips to create and move shapes around.
Pennsylvania Department of Education
Rotational Symmetry of Polygons and Other Figures
Students explore geometry by participating in a shape rotation experiment. In this symmetry instructional activity, students identify the term symmetry and a list of other geometry vocabulary. Students analyze shapes as they are turned...
Curated OER
Patterns in the Sums of Polygon Angles
Sixth graders discover the patterns of sums of polygon angles. For this math lesson, 6th graders study the properties of geometric shapes to solve problems as they participate in hands-on activities.
Curated OER
Cross Section and Slope
Students draw cross sections of given contour maps. In this math lesson, students interpret the different symbols used in the map. They determine slope and steepness through direct measurement.
Curated OER
Squares, Circles, Cylinders, & Spheres
In this online interactive squares, circles, cylinders, and spheres activity, students use geometry to solve 8 problems that require them to identify shapes.
Curated OER
Circumference and Area of Circles
In this circumference and area worksheet, students find each for a set of 12 given circles; either diameter or radius are given. A website reference for additional resources and answers are provided.
Curated OER
Circumference and Area of Circles
In this circumference and area of circles activity, students find each to 1 decimal place of 12 given circles. A website reference for additional resources and answer key are given.
Curated OER
Geometry, Word Search Puzzle
In this math worksheet, students look for the words that are related to the math words used in the practice of geometry. They also practice spelling.
Curated OER
Fun Ideas for Getting A-Round in Math CIRCLES
Students see circles in real life and have fun with them
Curated OER
The Golden Students
Scholars view the video, "Donald Duck in Mathmagic Land," and discuss examples in nature which have proportions of the golden ratio. They measure and record different body lengths from a worksheet and convert the ratios to equivalent...
Education Development Center
Finding Triangle Vertices
Where in the world (or at least in the coordinate plane) is the third vertex? Given two coordinate points for the vertices of a triangle, individuals find the location of the third vertex. They read an account of fictional...
Education Development Center
Finding Parallelogram Vertices
Four is the perfect number—if you're talking about parallelograms. Scholars determine a possible fourth vertex of a parallelogram in the coordinate plane given the coordinates of three vertices. They read a conversation...
Curated OER
Sir Cumference and the Dragon Pi
Geometry adventurers study circumference of a circle as they listen to Sir Circumference and the Dragon Pi, by Cindy Neuschwander. In groups, they use string to measure the diameter and circumference of circular objects and...
Curated OER
Equations in Motion: Design and construct a mobile
Students participate in a lesson that covers the concepts of solving equations and inequalities. To master the concept they must demonstrate visually and verbally how both sides of an equation must be balanced. They construct a balanced...
Curated OER
Frame Yourself
Young ratio masters calculate and cut a frame (out of poster board) to accurately create an even frame around a picture of themselves. The frame needs to be proportional to the picture with constraints determined by the instructor.
Curated OER
Graph It
Elementary and middle schoolers engage in a lesson of graphing in quadrant I of the coordinate plain. They use the graph to create shapes and symbols. While using a graphing calculator, they locate the points on the coordinate plane. In...
Helping with Math
Supplementary Angles
Pupils calculate the measurement of supplementary angles when one angle is known. The one-page assignment has six simple problems. It contains links to related resources as well as the answer key. Be aware that although the publisher...