Curated Video
Identifying Geometric Figures in Two-Dimensional Shapes
In this lesson, students will learn how to identify and classify geometric figures in two-dimensional shapes. They will understand the properties of points, lines, rays, and angles and use them to analyze shapes. By recognizing parallel...
Curated Video
Finding the Density of a Solid Sphere
This video shows the process for solving the problem presented in IGCSE A June 2018 paper 2H Q11, which involves finding the density of a solid sphere. Students will learn how to use the formula for the volume of a sphere to find its...
Curated Video
How to Identify Vertices, Edges & Faces in Three Dimensional Figures
In this video lesson we will learn how to identify vertices, edges and faces on a three-dimensional solid. We will learn that the edges meet at the vertices. We will discover that each face is formed by edges. We will discover the...
Curated Video
How to Find the Volume of a Composite Figure
In this short video we will answer a standardized math test question where we are asked to find the volume of a composite figure. We will review that a composite figure is a solid made up of two or more three dimensional figures. We will...
Curated Video
How to Determine the Volume of a Composite Solid
In this short math video we will learn how to determine the Volume of a Composite Solid. The composite solid is composed of two right rectangular prisms which we will visual divide into two right rectangular prisms. We will identify the...
Curated Video
Representing Three-Dimensional Figures with Nets
In this video, the teacher explains how to represent three-dimensional figures in two dimensions using nets. They define dimensions and give examples of one-dimensional, two-dimensional, and three-dimensional figures. They also...
Curated Video
Introducing Sensitivity Analysis for Business Forecasting Accuracy Improvement
This video provides an introduction to sensitivity analysis and how it can help businesses improve the accuracy of their forecasts. The narrator explains that businesses face uncertainties in all activities they undertake and that these...
Curated Video
Visualizing Two-Dimensional Cross-Sections of Cones
In this video, the teacher explains how to visualize and identify the two-dimensional cross-sections of cones. They discuss the different shapes that result from slicing through cones at different angles, such as triangles, parabolas,...
Curated Video
Visualizing Two-Dimensional Cross Sections of Cylinders
In this video, the teacher explains how to determine the shape of a cross section when slicing a three-dimensional solid. By analyzing whether the slicing plane intersects with straight or curved surfaces, students can visualize and...
Curated Video
Analyze Triangular Prisms to Find Surface Area
This video explains how to analyze triangular prisms by identifying and assessing pairs of congruent triangular faces. It discusses the concept of congruence and parallelism in 3D solids. The lesson highlights the different sizes and...
Curated Video
Understanding Square Units and Cubic Units
In this video, the teacher explains the difference between square units and cubic units by analyzing dimensions. Square units are used to measure area in 2D figures, while cubic units are used to measure the amount of space occupied by...
Anywhere Math
Three-Dimensional Figures
Who knew there were so many parts to a geometric solid?! Well, you probably did, and your pupils will, too, after watching a video lesson on three-dimensional figures. Instruction includes a description of the parts of solids, naming...
Curated OER
How Do You Identify a Three-Dimensional Figure from a Net?
Learn how to use two-dimensional nets to identify their corresponding three-dimensional figure. The instructor uses diagrams to illustrate the two-dimensional nets and talks about the characteristics of each one to identify its...
CK-12 Foundation
Three Dimensions in Two Dimensions: Lesson
Slice up solids. A portion of a geometry playlist introduces two conventional ways to visualize 3-D figures in 2-D. The resource defines cross-sections and nets and provides examples of both.
Corbett Maths
Names of 3D Shapes
Quick, name that shape! Scholars learn the names and common properties of three-dimensional solids. They watch a short video that shows an example of each shape and identifies the two-dimensional faces that make up its surfaces.
Curated OER
What is a Cone?
What are the things that make a shape a cone? Here's a list of things that define a cone: base, height, vertex, radius, curved side. Are you familiar with all these terms? The teacher diagrams a cone and identifies all the components in...
Curated OER
What is a Ray?
A ray is a line that begins at an identified point and then goes on forever in one direction. The identified point is called the endpoint. There needs to be another identified point on the line to be able to identify the line as a ray....