Worksheet
Curated OER

Estimation and Approximation

For Students 7th - 8th
In this estimation and approximation instructional activity, students determine the estimated value of given multiplication and division problems containing decimals. They round answers to the nearest whole number. This two-page...
Worksheet
Curated OER

Multiplying and Dividing

For Students 6th - 8th
In this multiplying and dividing worksheet, students compute the product and quotient of whole numbers and decimals. This two-page worksheet contains 4 multi-step problems.
Worksheet
Curated OER

Supply, Demand, and Prices Worksheet

For Students 11th - 12th
In this economics learning exercise, students use their problem solving skills to respond to 34 questions about supply, demand and prices.
Worksheet
Curated OER

Translate between words and math

For Students 4th - 6th
In this word problems learning exercise, students practice solving word problems having to deal with money, baseball cards, candies, and more. Students solve 9 problems.
Lesson Plan
Curated OER

Multiplication With Two Digits

For Teachers 3rd
Third graders multiply one and two digit problems, identify place value, and maneuver manipulatives to solve problems.
Interactive
Curated OER

Pictures of Data

For Students 5th - 8th
In this data worksheet, students look at maps and charts and answer multiple choice questions about them. Students complete 10 questions.
Interactive
Curated OER

Concerning the Principles of Morals Quiz

For Students 10th - Higher Ed
In this online interactive reading comprehension worksheet, students respond to 14 multiple choice questions about Hume's Concerning the Principles of Morals. Students may submit their answers to be scored.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Gpe Explaining the Equation for a Circle

For Teachers 9th - 10th Standards
This problem examines equations defining different circles in the x-y plane. Students must use the Pythagorean Theorem to find equations whose solutions are points on the circle and explain why they work. Includes a GeoGebra worksheet...
PPT
Sophia Learning

Sophia: Equations for the Circle: Lesson 3

For Students 9th - 10th Standards
This lesson presents the standard form and the general form for the equation of a circle, and relates the two. It is 3 of 5 in the series titled "Equations for the Circle."
Unit Plan
Sophia Learning

Sophia: Equations for the Circle: Lesson 5

For Students 9th - 10th
This lesson presents the standard form and the general form for the equation of a circle, and relates the two. It is 5 of 5 in the series titled "Equations for the Circle."
Handout
CK-12 Foundation

Ck 12: Geometry: Properties of a Circle Study Guide

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This study guide reviews the terminology for circles (tangent, arcs, central angles) and the equation for a circle.
Unit Plan
Cuemath

Cuemath: Circumference of a Circle

For Students 6th - 8th Standards
Understand the concept of circumference by learning the definition, circumference geometry definition, circumference equation, and circumference of a circle formula. Check-out the interactive simulation for better understanding and try...
Graphic
Math2

Math2: Circles

For Students 9th - 10th Standards
This site has many useful formulas and examples relating to circles, including related definitions, circumference of a circle, area of a circle, length of a circular arc, area of a circular sector, equation of a circle in cartesian...
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 10.2 Equations of Circles

For Students 9th - 10th Standards
Derive the equation of a circle with the help of the Pythagorean Theorem.
Activity
Texas A&M University

Wtamu Virtual Math Lab: College Algebra: Circles

For Students 9th - 10th Standards
Use this tutorial to learn about the standard-form equation for a circle. Several step-by-step solutions and examples help you understand the part of the circle and how they relate to the equation.
Activity
Texas Instruments

Texas Instruments: Match the Graph (Circles)

For Teachers 9th - 10th
Students will learn about the equation for a circle by using a Study Cards stack. Later, students will attempt to match the graph of a circle from a digital picture, using the form learned previously, and approximating the center and...
Activity
Purple Math

Purplemath: Completing the Square: Circle Equations

For Students 9th - 10th Standards
This tutorial works through two examples step by step that shows how to complete the square for finding the center and radius of a circle.
Handout
Cuemath

Cuemath: Equation

For Students 9th - 10th
A comprehensive guide for learning all about equations with definitions, how to solve them, solved examples, and practice questions.
Unit Plan
Sophia Learning

Sophia: Components of Circular Motion

For Students 9th - 10th
A video lesson that introduces the components of circular motion. Understand that any objects that rotates around a point is in circular motion. Video also explores how to measure how far an object has rotated. Video gives equation for...
Activity
Texas Instruments

Texas Instruments: Conic Equations

For Teachers 9th - 10th Standards
This Learn Check file is a review of writing conic sections given the graph of a conic section. Students are asked to use the graphs to write the equations for a ellipse, circle, parabola, and hyperbola.
Interactive
University of St. Andrews (UK)

University of St. Andrews: Involute of a Circle

For Students 9th - 10th
This site, which is provided for by the University of St. Andrews, allows you to zoom in/out and add evolutes, involutes, etc.
Activity
Texas Instruments

Texas Instruments: Conics: Circles

For Teachers 9th - 10th Standards
In this study of conics, students will examine the derivation of equations for circles. There are two general equations for circles. The first is a circle whose center is at the origin, while the second is a circle whose center is not at...
Handout
University of Regina (Canada)

Univeristy of Regina: Math Central: Tangent Lines and Circle Equations

For Students 9th - 10th Standards
This site offers a problem and solution to finding all possible slopes for a line tangent to a circle given a particular equation of a circle. Could be an interesting challenge for students.
Article
Khan Academy

Khan Academy: Uniform Circular Motion and Centripetal Acceleration Review

For Students 9th - 10th
Review the key concepts, equations, and skills for uniform circular motion, including centripetal acceleration and the difference between linear and angular velocity.