Mt. San Antonio Collage
Circles
Don't circle around the topic, but get right to the center with tons of practice regarding circles in geometry. The note-incorporated instructional activity provides guided practice through many topics such as central angles, inscribed...
EngageNY
Unknown Length and Area Problems
What is an annulus? Pupils first learn about how to create an annulus, then consider how to find the area of such shapes. They then complete a problem set on arc length and areas of sectors.
Mathematics Vision Project
Circles: A Geometric Perspective
Circles are the foundation of many geometric concepts and extensions - a point that is thoroughly driven home in this extensive unit. Fundamental properties of circles are investigated (including sector area, angle measure, and...
Curated OER
The Big Circle
Students explore geography by participating in a mapping activity. In this concentric ring lesson, students utilize a poster board, string and markers to identify their current location within the entire world. Students write about their...
Curated OER
Finding The Area
In this geometry worksheet, students calculate the area of a given shape. They use the formulas for squares and circles to help them find the area. There are 2 questions with an answer key.
101 Questions
Apple Mothership
Explore Apple's spaceship office building. Built in the shape of a circle, the office building offers a unique floor plan challenge. Young scholars use the dimensions of the building to estimate the square footage for each employee.
Illustrative Mathematics
Designs
A resource that makes for excellent group work as middle schoolers explore the area and perimeter of different complex designs made up of squares and circles. The commentary gives a clear definition of perimeter, but suggests that group...
Curated OER
Geometric Probablitiy: Spinners and Dartboards
Sstudents explore and analyze the properties of geometric areas. In this geometry lesson, sstudents use technology to simulate spinners and dartboards in order to fing areas of circles and sectors of circles and compare and contrast...
New York Science Teacher
Planet Scaling using Extra Terrestrial Tools
Your class will use a set scale to convert diameters of planets to the model size, the diagram given to expand on the number of planets drawn as concentric circles, and examine the scale that would be needed to fit the larger planets on...
Curated OER
Connecting Formulas Related to Geometric Figures
Students identify diagrams of quadrilaterals and circles by different names and classify the figures. They name the areas for each diagram and practice solving the formulas for each.
Curated OER
Geometry Worksheet: Area (6)
In this geometry learning exercise, 10th graders express the area of the ring between two concentric circles in terms of the length of a segment tangent to the smaller circle. The one page learning exercise contains a drawing of and an...
101 Questions
Car Caravan
Keep playing with those old toy cars! Pupils estimate the number of toy cars in an art installation. The only information they receive is a picture showing the toy cars arranged in concentric rings and the diameter of the overall...
Curated OER
Spitzer Sees a New Ring Around Saturn
In this Saturn's rings worksheet, students read about the Spitzer telescope that detected a new ring around Saturn. Students solve 6 problems including determining the formula for the area of a circle, finding the volume of the new ring...
Curated OER
Water and Diffusion
In this water and diffusion learning exercise, students will explore the characteristics of water and the water molecule. Students will also answer questions about diffusion and the movement of materials due to concentration differences....
Curated OER
A Peek into the Lives of Stars!
Students create a model of the birth of a star and demonstrate the stages of the star's lifecycle. In this star lifecycle lesson, students mix flour and water in a jar to model the birth of a star, then role-play the entire lifecycle in...
Baylor College
There's Something in the Air
Clever! In order to compare indoor and outdoor dispersal rates for the movement of gases and particles through air, collaborators will participate in a classroom experiment. Set up a circular grid and set learners on lines that are...
Curated OER
The Merry Go Round Problem
In this algebra worksheet, 9th graders analyze a concetric circle to determine the area a worker must paint in two different colors. They must decide from which angle he start painting because of the location of the merry go round. There...
National Wildlife Federation
Branching Out – Exploring Dendrochronology
Tree rings from North America give a continuous history of El Nino intensity over the last 1,100 years. Scholars learn how scientists use tree rings to create timelines demonstrating variations in weather patterns. The cumulative...
Curated OER
Aboriginal Statistics
Fourth graders analyze statistics of Native Americans by creating graphs. In this data analysis lesson, 4th graders define different statistical terms and practice finding those statistics from groups of numerical information about...
Curated OER
Maths with the Mob - Aboriginal Culture
Young scholars read and discuss books about aboriginal family life. Working individually and in groups, they complete a series of activities in various subject areas, including art, language, math, and social studies. Among the...
Curated OER
Angles and Arcs
Students discuss the sum of central angles and use string to create them on circles. They find the measure and length of both minor and major arcs.
Students give examples of concentric, similar, and congruent circles and congruent arcs.
Curated OER
Locating Patterns of Volcano Distribution
Students examine patterns of volcanic distribution worldwide, use tables to plot and label location of each volcano on map, lightly shade areas where volcanoes are found, and complete open-ended worksheet based on their findings.
Curated OER
Who says I can't be Sherlock Holmes?
Students create a "crime scene" in their classroom and have to tell what's out of place. The class is given a set of cards that are all face down and have to play concentration. If they get a matched pair, they get both cards. Whoever...
Curated OER
Painting a Color Wheel
You have to love the color wheel, it's just so colorful! Your kids will love it too, as they work through an introductory exercise which allows them the opportunity to draw and paint a color wheel of their own. This wheel focuses on...