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Radius Teacher Resources
Find teacher approved Radius educational resource ideas and activities
Groups of learners compare the circumference to the diameter of various circles and discover the approximation of pi. They write their conclusions for the activities and calculate the circumference and area of circles. Pupils take pictures of circles and calculate their area.
In this length of an arc and area of a sector worksheet, 10th graders solve and complete 12 different types of problems. First, they find the length of an arc in a circle with a given radius and central angle measure. Then, students find the area of a sector in a circle of a given radius and central angle measure.
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 planet models activity, learners 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.
Aspiring astronomers study stars. They compare stars and explain the relationship between radius, mass, and diameter. By creating a star simulation, they discover how a binary star system's orbit can cause changes in the observed brightness of the system. This is a terrific space science investigation or practical application of ratios and proportions.