University of Cambridge
University of Cambridge: Nrich: Octa Space
At this one page web site see if you can solve this puzzle involving the edges of an octahedron. You will definitely need to use your problem solving and spatial reasoning skills for this!
NumberNut
Number Nut: Shapes, Symbols, and Colors: 3 D Shapes
This lesson describes three dimensional shapes and provides two interactive practice activities.
Sophia Learning
Sophia: Volume Units
This lesson introduces the units of distance (cubed units) used to describe volume. Students watch a video tutorial and then can take an online quiz.
ClassFlow
Class Flow: 3 D Shapes
[Free Registration/Login Required] In this flipchart, students are introduced to the following 3-D shapes, including spheres, cylinders, and rectangular prisms.
ClassFlow
Class Flow: 3 D Shapes
[Free Registration/Login Required] In this flipchart students learn about the following shapes: cone, prism and pyramid.
ClassFlow
Class Flow: 3 D Shapes Review
[Free Registration/Login Required] This flipchart reviews 3-D shapes.
Disfruta Las Matematicas
Disfruta Las Matematicas: Geometria
This unit could be used as supplementary material for Geometry. It has good examples with illustrations and some interactive activities.
Math2
Math2.org: Areas, Volumes, Surface Areas
This site gives formulas for the area, volume, and surface area of various shapes.
Calculator Soup
Calculator Soup: Square Pyramid Calculator
Use this calculator to determine the volume, surface area, or other figure for a square pyramid, given the other numbers. Users set their parameters for two known variables of the pyramid and find what the unknown amounts would be.
Wolfram Research
Wolfram Science World: Pythagoras of Samos (Ca. 560 Ca. 480 Bc)
This site from ScienceWorld provides a short, informative description of many of the contributions of Pythagoras to mathematics. Links exist to some of the contributions as well as to additional information.
University of Cambridge
University of Cambridge: Nrich: All in the Mind
You will have to use visualization to help you solve this challenge. At this one page website, you will be able to check your solution.
University of Cambridge
University of Cambridge: Nrich: Dicey
If you can visualize a cube and turn it around in your mind, then this is the challenge for you. This one page website has the solution available to check your thinking.
PBS
Pbs Kids Afterschool Adventure!: Operation: Shape It Up Activity Plan
Get your spy glasses ready! In this weeklong adventure, children will explore shapes and their attributes and use this knowledge to decode a secret message. Children will learn about two-dimensional (flat) and three-dimensional (solid)...
Khan Academy
Khan Academy: Rotate 2 D Shapes in 3 D
Practice your 3D visualization skills by rotating 2D shapes. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Nets of Polyhedra
Practice matching 2D nets to the 3D shapes the fold up into. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
AAA Math
Aaa Math: Volume of a Rectangular Prism
Find out how to find the volume of a prism, and follow up with some practice problems.
Clark University
Clark University: Euclid's Elements
A review of the 13 books of Euclid's "Elements" text can be found here. Each of the chapters are broken down into definitions, propositions, and common notations that are used throughout this overview.
Math Open Reference
Math Open Reference: Prism
Use this interactive tool to explore prisms. Change the height and the shape of the base to see how these affect the prism. There are also several additional options, e.g., making it oblique or transparent. Properties of a prism are...
Math Open Reference
Math Open Reference: Pyramid
Use this interactive tool to explore pyramids. Rotate the pyramid to view it from all sides. Increase the number of sides (even to well over 100) until it closely resembles a cone. The base can be made irregular and you can 'explode' the...
The Math League
The Math League: Surface Area
This tutorial explains the concept of surface area, and then goes through multiple shapes offering the specific surface area formula for each one.
E-learning for Kids
E Learning for Kids: Math: Pizza (Italian) Restaurant: Prisms and Pyramids
On this interactive website students practice various math skills including naming prisms and pyramids, drawing cross sections of prisms and pyramids, and exploring three-dimensional views.
University of Cambridge
University of Cambridge: Nrich: Making Boxes
Have fun and learn by making a box and then find out its maximum volume as well as other problem-solving activities, including making a table of your results and drawing a graph.
Curated OER
Educational Technology Clearinghouse: Maps Etc: Europe (Physical), 1868
A map from 1868 of Europe, showing the physical features, climate, and commercial resources of the region. Mountain chains are represented by lines of varying thickness, with the broader the line, the greater the elevation. The highest...
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