New ReviewHow do you find the area if an object has more than four sides? Learners view an interesting video to learn how to determine the surface areas of rectangular prisms and pyramids. They see how to draw two-dimensional nets of the figures...

New ReviewQuick, 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.

New ReviewWho 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...

New ReviewGo big or go home! Learners watch a video rendition of the creation of a penny pyramid. Their task is to determine the number of pennies in the pyramid. The lesson encourages multiple methods, including function building or volume formulas.

Explore vocabulary related to three-dimensional shapes. An instructional website describes the characteristics of different geometric solids. Learners can use an interactive component to view nets, faces, vertices, and edges of common...

Pyramids: they're not just in Egypt! The segment of a large geometry playlist introduces the formulas to find the volumes and surface areas of regular pyramids. Using the formulas, the presentation works several examples to ensure your...

Were the pyramids really built using slave labor? New research offers another possibility. In Egypt, many mysteries surround these monuments, and a constructive video (part of a larger series) attempts to answer some. It discusses where...

Discover formulas for surface area by analyzing nets. Using graph paper and nets, young scholars work toward deriving the formulas. They first derive the formula for a pyramid and then connect their processes to finding a formula for cones.

Scholars see cross sections come to life using an app to investigate cross sections of three-dimensional solids. They look at prisms, pyramids, cylinders, cones, and double cones.

There's no need to mention Cavalieri's principle obliquely. Individuals investigate the relationships between the volumes of right and oblique three-dimensional solids. Application of Cavalieri's principle helps them calculate volumes of...

Take your classes back in time to an ancient world. Using units of ancient time, scholars determine the height of the Great Pyramid of Giza. They use the volume and base edge measurement in their calculations.

Show your class how to model tents using geometry. Provided with pictures of different types of tents, pupils determine a geometric shape they could use to model them. They then use a variety of prisms and pyramids to model the tents.

Who built the pyramids? Debunk the alien myth with an informative video that examines who, how, and when the many Egyptian pyramids were constructed.

Figure out what it will take to cover up. The 18th part of a 22-part series presents nets as a way to determine surface area. Pupils determine the measurements of the portions of the nets before calculating the area of each portion and...

What are the dimensions of nets that fit the solid? Pupils determine the sizes of the faces of 3-D figures. Then, learners create the two-dimensional faces and arrange them to build a net of the original three-dimensional figure. 

Unfold the faces of a three-dimensional figure. Scholars define a net and determine whether drawings are nets or not. They compare nets with their associated 3-D figures and identify the various faces to finish the 16th segment in a...

Examine surface area of composite figures using an exploratory approach. As a continuation from the previous lesson of the 29-part series, young scholars develop plans for finding the surface area of composite figures. Examples become...

The class makes the connection between finding the area of a right prism and a right pyramid in the 23rd installment in a series of 28. The pupils find the surface area of figures created by stacked cubes and prisms with cutouts.

Learners examine objects and find their volumes using geometric formulas in the 21st installment of this 25-part module. Objects take the shape of truncated cones and pyramids, and individuals apply concepts of similar triangles to find...

Explore methods for finding the volume of different three-dimensional figures. The 20th lesson in the 25-part series asks learners to interpret diagrams of 3-D figures and use formulas to determine volume. Scholars must use the...

A dimensional resource teaches viewers to recognize 2-D views of 3-D objects and how to match nets with their 3-D figures. Individuals draw different views of three-dimensional objects including views from the front, side elevations and...

Get siblings to do your work. Scholars learn how to perform summations of arithmetic sequences in an innovative instructional activity. They use iterations, smaller siblings (tail-end recursion), and the divide-and-conquer approach.

Reinforce basic geometry skills in an elementary math lesson. A simple instructional activity prompts learners to identify and label 3-D shapes.

Solid figures are all around us! Reinforce knowledge of 3-D shapes with a nine-problem worksheet that requires scholars to label everyday objects with their shape name.