Lesson Plans and Worksheets
Browse by Subject
Radius Teacher Resources
Find Radius educational ideas and activities
Tenth graders explore and define the radius and diameter of a circle. For this geometry lesson, 10th graders calculate the circumference and area of a circle using real world objects and shapes. They discuss chords and lines tangent to a circle as it relates to tangency.
For this Sombrero Galaxy worksheet, learners observe infrared images taken by the Spitzer Infrared Telescope and the Hubble Space Telescope. They answer 9 questions about the details of the images such as the radius of the stellar component, the thickness of the dust disk and the diameter of the bright nuclear core.
Students investigate the relationship between the radius and area of circles that change size over time. They identify and interpret the puddle at a crime scene, that it is certain to be irregularly shaped and the floor would be neither smooth nor level. This raises several questions about the mathematics of true reality, as well as the physical chemistry involved.
In this volume and surface area worksheet, 10th graders solve and complete 12 different types of problems. First, they find the volume and total surface area of a given circle. Then, students find the height and radius of a cylinder illustrated. They also find the volume of the remaining solid shown.
In this black holes worksheet, learners read about black holes and solve 3 problems where they calculate the Schwarschild radius of one, the number of grams/second a quasar luminosity implies for another and the number of suns per year a super massive black hole consumes at different efficiencies.
In this planet models activity, students use the radius of a given planet and its mass to answer questions using a model of a planet with a given radius. They determine the volume of the planet's inner core, the volume of its outer shell, and the total mass of the planet.
Sixth graders listen to the story of Sir Circumference and the Dragon of Pi. They measure the circumference and diameter of circular objects, record measurements in a table, and use calculators to divide the circumference by the diameter. They complete a homework assignment in which they find the radius of a pizza.
Students construct circles using Cabri Jr. In this circle construction using Cabri Jr. lesson, students construct a circle using Cabri Jr. Students measure the diameter and radius. Students find points on the circle in order to find an equation to model their circle. Students move their circle and discuss the differences in the equation.
In this spherical tanks and fuel level worksheet, students are given a diagram showing the effects of gravity or acceleration on the level of fuel in a spherical tank. Students solve 3 problems including finding the general formula for the radius of a disk, finding the integral for the volume of fluid in a tank and finding the equation for the change in height of the fluid with respect to time as fluid is being withdrawn from a tank.
Tenth graders explore circles. In this geometry lesson students investigate the relationships between the diameter and circumference of a circle and between the radius and area of a circle. The dynamic nature of TI-nspire provides opportunity for conjecture and verification.