Handout
Geometry Help

Geometry Help: Area of Geometric Shapes

For Students 9th - 10th Standards
Explains the basic concept of the area of geometric shapes with step-by-step instructions and methods for solving specific problems on your own relating to this topic.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 8.g Areas of Geometric Shapes With the Same Perimeter

For Teachers 8th Standards
Eighth graders are shown three polygons with equal sides and a circle. They are asked to find the area of each when the perimeter is one unit and to order them from smallest area to largest. Aligns with 8.G.B.7.
Activity
Texas Instruments

Texas Instruments: Exploring Area

For Teachers 6th - 8th
In this activity, students learn to calculate the area of geometric shapes. They solve real world problems involving area.
Study Guide
Oswego City School District

Regents Exam Prep Center: Area of Polygons and Circles

For Teachers 3rd - 6th Standards
How would you find the area of a polygon or circle? Explore this concept with engaging activities at this test prep site. Here you will find detailed problem solving strategies with accompanying visuals, a reference table with formulas,...
Activity
Texas Instruments

Texas Instruments: Give Me a Hand or Leaf Me Alone

For Teachers 6th - 8th
In this activity, students' find the surface area of geometric shapes cut from card paper and relate it to its mass. They use this data to find the surface area of irregularly shaped objects.
Study Guide
Oswego City School District

Regents Exam Prep Center: Area of Polygons and Circles

For Teachers 9th - 10th Standards
A lesson focusing on the area of polygons and the circumference of circles. Engaging, interactive practice worksheet, lesson plan, and related classroom activity complete this lesson.
Activity
George Mason University

Area Formula Lab

For Teachers 4th - 8th Standards
In this set of worksheet activities, students will be guided to discover formulas for area of polygonal shapes and circles.
Lesson Plan
Alabama Learning Exchange

Alex: Shape Makers

For Teachers K - 1st Standards
In this Five E's AMSTI lesson plan, students discover relationships between shapes. Students discover multiple ways to combine shapes to fill the area of a given shape using real and virtual pattern blocks, and share their solutions with...
Lesson Plan
OER Commons

Oer Commons: Polygons

For Teachers 7th
Seventh graders find the area of regular polygons, recalling what they already know about the area of geometric shapes and generalizing a formula for any regular polygon.
Interactive
Government of Alberta

Learn Alberta: Math Interactives: Exploring Surface Area, Volume, and Nets

For Students 5th - 8th Standards
Investigate the concepts of area, volume, 3D shapes, and nets using this interactive Learn Alberta math. The solid shapes focused on this exploration include rectangular and triangular prisms, rectangular and triangular pyramids,...
Interactive
Calculator Soup

Calculator Soup: Surface Area Calculator

For Students 9th - 10th
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
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Mg How Many Leaves on a Tree? (Version 2)

For Teachers 9th - 10th Standards
In this task, students must estimate the number of leaves on a large tree, taking into account various complex factors such as the area shaded by the tree, the area of irregularly shaped leaves, the uneven distribution of leaves, the...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Mg Hexagonal Pattern of Beehives

For Teachers 9th - 10th Standards
Beehives are made of walls, each of the same size, enclosing small hexagonal cells where honey and pollen are stored and bees are raised. This problem examines some of the mathematical advantages of the hexagonal tiling in a beehive....
Graphic
The Math League

The Math League: Surface Area

For Students 9th - 10th Standards
This tutorial explains the concept of surface area, and then goes through multiple shapes offering the specific surface area formula for each one.
Activity
University of Cambridge

University of Cambridge: Nrich: Green Cube, Yellow Cube

For Students 3rd - 8th
Think about the surface area of a cube. At this one page website, you use that information to complete the challenge. Solutions are offered right at the website.
Activity
Texas A&M University

Wtamu Virtual Math Lab: Beginning Algebra: Formulas

For Students 9th - 10th
This tutorial will show you how using formulas can help you solve problems. Include formulas for various geometric shapes and steps showing how to use them.
Activity
National Council of Teachers of Mathematics

Nctm: Figure This: Windshield Wipers

For Students 3rd - 8th
Test your mathematical aptitude with challenge exploring the concepts of measurement and geometry. Find the area of the windshield wipers to figure out who sees better in the rain, car drivers or truck drivers. An activity from the NCTM...
Activity
University of Cambridge

University of Cambridge: Nrich: Little Squares

For Students 3rd - 8th
What are square numbers? Use tiles at this one page website to discover the pattern of square numbers. See if you can solve the challenge. Once you have your solution you can check the solution given right at the website.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Mg How Thick Is a Soda Can? Variation I

For Teachers 9th - 10th Standards
In this task, students are given the dimensions of a soda can and are asked to estimate its thickness. They must first find the surface area and the volume of aluminum. Aligns with G-MG.A.1 and G-MG.A.2.
Whiteboard
ClassFlow

Class Flow: Area Flash Cards

For Teachers 6th - 8th
[Free Registration/Login Required] This flipchart identifies student's prior knowledge of different shapes and their area by using flash cards. This lesson was intended for grade level 6-8 or lower. A quick warm-up as you launch into...
Lesson Plan
National Council of Teachers of Mathematics

The Math Forum: Building a Pyramid

For Teachers 6th - 8th Standards
This Math Forum lesson gives instructions on how to build a paper pyramid. Bonuses included finding the surface area and volume of the pyramid.
Website
PBS

Pbs Parents: Early Math

For Students Pre-K - 1st
Help nurture the development of early math skills -- from infant to grade 2. Site provide information about math literacy and developmental stages. For each age range, you will find several online games and printable activities for core...
Unknown Type
abcteach

Abcteach: Geometry

For Teachers Pre-K - 1st Standards
[Free Registration/Login Required] This resource has an assortment of teacher-created geometry activities for elementary and primary students. Printable two-dimensional shapes, area and perimeter worksheets, board games, rules and...
Activity
Texas Instruments

Texas Instruments: What Goes Around Comes Around but Can You Measure It?

For Teachers 9th - 10th
In this activity, students find the area and the perimeter for several geometric shapes. They also determine the surface area and volume of spheres.