Curated Video
Volume of a Cylinder: Using Radius and Height
In this video, the teacher explains how to find the volume of a cylinder using its radius and height. They guide the viewer through the steps, including identifying the radius and height, and using the formula πR^2h to calculate the...
Curated Video
Circles: Diameter, Radius & Area | 7.G.B.4
In this math video we are talking circles: diameter, radius & area. We will draw a picture to represent the information given and use the picture to solve the problem. This is a two part problem where we are asked to find the radius and...
Curated Video
Volume of a Cone Using Diameter
In this video, the teacher explains how to find the volume of a cone using the formula 1/3 * π * r^2 * h. They walk through the process step-by-step and provide helpful tips for identifying the values needed for the equation. Grade 8...
Curated Video
Diameter, Radius, and Circumference All Around
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Curated Video
Volume of a Sphere
In this video lesson we will learn how to find the volume of a sphere. We will learn that the volume of a sphere is two-thirds the volume of a cylinder with the same radius and height. We will learn how to use the formula to find the...
Curated Video
Finding the Volume and Height of Cones
In this video lesson, the teacher explains how to find the volume of a cone and its relationship to the volume of a cylinder. They also teach how to find the height or radius of a cone given its volume. Real-world problems are presented...
Curated Video
Testing Antiseptics: Using Agar Plates to Compare Effectiveness
The video is a lecture presentation on testing antiseptics. It explains the two stages of the experiment, starting with how to set up an agar plate with a single type of bacteria using aseptic techniques to avoid contamination. The...
Curated Video
Volume of a Cylinder
In this video, the teacher explains how to find the volume of a cylinder using the formula volume equals pi r squared times h. They also discuss the relationship between the volumes of prisms and cylinders, and demonstrate how to find...
Khan Academy
SAT Prep: Test 3 Section 8 Part 2
Problems 7-9 involve exponents, inequalities, and geometric figures (diameter and radius), all of which Sal explores eagerly. After misreading one problem, he takes care to correct his mistake, showing students how important it is to...
Khan Academy
SAT Prep: Test 4 Section 4 Part 1
The next section of the practice SAT from The Official SAT Study Guide (page 594) covers simple linear equations and geometric figures. Students will appreciate Sal's quick problem solving and thought process, which is easy to understand...
Khan Academy
Test 3 Section 2 Part 5
Both algebra and geometry problems are featured in this SAT practice video. Students who struggle to transition between skills on tests (average mean, then diameters and pi, then positive integers) would benefit from Sal's deft handling...
Khan Academy
SAT Prep: Test 1 Section 3 Part 4
Pushing through to problems 11-12 on page 398 of The Official SAT Study Guide, Sal goes into comprehensive detail on each problem. Problem 11 involves geometry, including the function of pi, and problem 12 involves non-constant slopes....
Khan Academy
SAT Prep: Test 3 Section 2 Part 3
Math speeds along in this video, which takes students through problems 11-15 on the practice SAT. Sal takes care to show students more than one possible way to solve several problems, allowing them to make the choice based on their own...
Curated OER
Area of Circles
Using a basic formula one can find the area of a circle. Duane walks learners through the steps needed to determine the missing variable, plug in the known variable, and solve to find the area of a circle. He provides two different...