Khan Academy
Khan Academy: Area of Composite Shapes
Practice finding the areas of complex shapes that are composed of smaller shapes. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Better Lesson
Better Lesson: Using Area as an Architect (Stations Day 1)
In this multi-day activity, 3rd graders make 3 different models of an orphanage floor plan using Google Drawing, Virtual Graph paper, and a construction of rectilinear shapes, to calculate the area of each room using units square.
CK-12 Foundation
Ck 12: Geometry: Spheres
[Free Registration/Login may be required to access all resource tools.] Find a sphere's volume and surface area.
Cuemath
Cuemath: Triangles
Explore everything about triangles. Learn about the different types, important properties, and how to find its area and perimeter. Check out the solved examples and interactive questions for better understanding.
Shmoop University
Shmoop: Basic Geometry: Area of Irregular Shapes
The geometry resource investigates the area of irregular shapes. Detailed examples and practice exercises are included.
Calculator Soup
Calculator Soup: Surface Area Calculator
Online calculator to calculate the surface area of geometric solids including a capsule, cone, frustum, cube, cylinder, hemisphere, pyramid, rectangular prism, sphere, spherical cap, and triangular prism
Math2
Math2.org: Areas, Volumes, Surface Areas
This site gives formulas for the area, volume, and surface area of various shapes.
Mangahigh
Mangahigh: Pyramid Panic: Basic Shapes to Advanced Geometry
Guide a mummy safely through the burial chambers of a pyramid as you solve length and area problems in basic to advanced geometry. There are four game zones that deal with circles and triangles, quadrilaterals, the Pythagorean Theorem,...
Rice University
Rice University: Cynthia Lanius: Geometry Online
This is a site for geometry lovers. Chock-full of puzzles, games, interesting geometry facts, and online activities.
ClassFlow
Class Flow: Surface Area and Volume Test
[Free Registration/Login Required] This test may be given in classes learning about volume and surface area of rectangular prisms, cylinders, and cones.
PBS
Pbs Mathline: Bubble Mania Lesson Plan [Pdf]
Determine the area, diameter, and circumerfence of a bubble residue by creating a soap solution and blowing bubbles.
Oswego City School District
Regents Exam Prep Center: Algebra: Practice Tests
Choose from three different practice exams that cover all Integrated Algebra topics reviewed in the Regents Exam Prep Center website: number theory, operation, variables, expressions, equations, inequalities, patterns, functions,...
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Geometry and the Geoboard
This site is a lesson plan for using a geoboard in a sixth grade geometry class. The lesson serves as an introduction to the geoboard and its uses in geometry. Some topics the lesson covers include helping to visualize shapes and and...
Math Playground
Math Playground: Geometry Board
Create polygons by stretching bands over pegs on this geometry board. Then find the area and perimeter of the shape you created.
Math Slice
Math Slice: Solid Slice Special Test
A ten-question test for assessing geometry concepts with solid figures. This assessment is scored online providing students with immediate feedback. Great for use as an assessment tool.
PBS
Pbs Mathline Lesson Plan: Sidewalk Capers [Pdf]
The objective of this lesson is for students to, "explore spatial relationships by determining the area of various shapes and creating tessellation patterns." Using a variety of hands-on activities, students apply concepts of geometry,...
Shodor Education Foundation
Shodor Interactivate: Triangle Explorer
This applet gives you practice finding the area of a triangle. Great place for students to "discover" how you find the area of a triangle. Directions are just a click away. [Requires Java.]
CK-12 Foundation
Ck 12: Plix Series: Area of Composite Shapes: Electric Field
[Free Registration/Login Required] Understand the relationship between field strength, charge, and force by determining what charge is required for a particle to levitate. After the activity, answer a challenge question to check for...
Alabama Learning Exchange
Alex: Nifty Nets
During this activity, students will create nets for prisms. They will find the volume and surface area of the shapes. They will also use interactive activities to review three-dimensional shapes.This lesson plan was created as a result...
Alabama Learning Exchange
Alex: Cutting the Cheese
The learners will find the area of each two dimensional figure on a net of a triangular prism. In groups, students will cut out the net and create a triangular prism. Groups will then discuss how to find the lateral area and the total...
Alabama Learning Exchange
Alex: Thinking Outside the "Box"
The students will find the area of each two dimensional figure on a net of a rectangular prism. In groups, students will cut out the net and create a rectangular prism. Groups will then discuss how to find the lateral area and the total...
Alabama Learning Exchange
Alex: Painting the Pyramids
The students will find the area of each two dimensional figure on a net of a square pyramid. In groups, students will cut out the net and create a square pyramid. Groups will then discuss how to find the lateral area and the total...
Purple Math
Purplemath: Geometric Formula Review
Need to freshen up on your geometric formulas? This explanation focuses on some basic formulas that should be committed to memory such as area, volume, perimeter, and more.
Alabama Learning Exchange
Alex: Pump Up the Volume
In this instructional activity, learners will be required to generate a formula for volume of a rectangular prism. Students working in cooperative groups will use prior knowledge for finding area of a rectangle to determine the "amount...