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Tenth graders investigate the volume of a cylinder. For this geometry lesson, 10th graders create three-dimensional cylinders and use a ruler to determine the dimensions. The lesson progresses to the use of the formula to find the volume and allows students to analyze how changing the radius and height of a cylinder affect this volume.
Fifth graders explore geometry by listening to a book read in class. In this space measurements lesson, 5th graders read the story Space Circles in class and identify the different planets that make up our Solar System. Students perform calculations of the radius and diameter of specific planets in order to find their circumference.
Tenth graders explore the volume of a cylinder. In this geometry lesson, 10th graders investigate the volume of a round bale of hay and the percent of loss as the radius of the bale decreases. The lesson includes step-by-step instructions to guide students through the constructions. TI-nspire handheld is required.
Learners develop techniques for estimating the area of a circle and use ideas about area and perimeter to solve practical problems. In this area and perimeter lesson, students apply the concepts of perimeter and area to the solution of problem. Learners apply formulas where appropriate to identify, measure, and describe circles and the relationships of the radius, diameter, circumference, and area.
Young scholars explore the concept of area of circles and rings. In this area of circles and rings lesson plan, students use construction paper and scissors to aid finding the area of circles and rings. Young scholars examine the effect halving a radius of a circle has on the area of the circle.
Students discover the ratio between arc length and radius. In this ratio between arc length and radius lesson, students use the Ti-Nspire to determine how arc length and radius are related. Students determine the arc length measure in radians. Students use the arcLen command on the Ti-Nspire to find the arc length measure in radians.
Sixth graders read the book "Sir Cumference and Knights of the Round Table" to introduce them to the concept of Pi. As a class, they discover where Pi originated and define the terms circumference, radius and diameter. To end the lesson, they try to develop their own formula for calculating the radius and diameter of a circle.