Lesson Plan
Curated OER

Surviving on the Siberian Tundra

For Teachers K - 4th
Students describe ways Nenets have adapted to their environment after listening to a National Geographic article about them. They compare their own adaptions to their environment with those made by the Nenet culture.
Lesson Plan
Curated OER

Think Green

For Teachers 4th - 8th
Students experience and practice compositing and recycling through hands-on-activities. They distinguish between which items from their trash can be recycled, composted and reused. The process for making recycled paper is also covered in...
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Area and Perimeter of Similar Polygons

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] In this lesson students find the ratios of the perimeters and areas of similar polygons. Students examine guided notes, review guided practice, watch instructional...
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Area and Perimeter of Similar Polygons

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This concept teaches students to find area and perimeter of similar polygons using ratios. Students examine guided notes, review guided practice, watch instructional...
PPT
Sophia Learning

Sophia: Scale Factor and Surface Area of Similar Figures: Lesson 3

For Students 9th - 10th
This lesson will discuss the relationship between scale factor and surface area of similar figures. It is 3 of 4 in the series titled "Scale Factor and Surface Area of Similar Figures."
Unit Plan
Sophia Learning

Sophia: Scale Factor and Surface Area of Similar Figures: Lesson 1

For Students 9th - 10th
This lesson will discuss the relationship between scale factor and surface area of similar figures. It is 1 of 4 in the series titled "Scale Factor and Surface Area of Similar Figures."
Unit Plan
Sophia Learning

Sophia: Scale Factor and Area of Similar Figures: Lesson 1

For Students 9th - 10th
This lesson will discuss the relationship between scale factor and area of similar figures. It is 1 of 5 in the series titled "Scale Factor and Area of Similar Figures."
PPT
Sophia Learning

Sophia: Scale Factor and Area of Similar Figures: Lesson 3

For Students 9th - 10th Standards
This lesson will discuss the relationship between scale factor and area of similar figures. It is 3 of 5 in the series titled "Scale Factor and Area of Similar Figures."
Lesson Plan
Science and Mathematics Initiative for Learning Enhancement (SMILE)

Smile: Similarity

For Teachers 9th - 10th Standards
This site contains a lesson plan for high school age learners. The objective is to discover the factor of proportionality in similar polygons and to relate this factor to the perimeters and areas of similar polygons.
Activity
CK-12 Foundation

Ck 12: Area and Perimeter of Similar Polygons

For Students 5th - 7th
[Free Registration/Login Required] Students move points to make diagonals in order to solve for area and perimeter of polygons. Click challenge me to answer practice questions.
Unit Plan
Texas Education Agency

Texas Gateway: Investigating and Applying Dimension Changes: Area

For Students 9th - 10th
The student will describe the effects of changing one or more dimensions on the area of a figure.
Handout
CK-12 Foundation

Ck 12: Geometry: Perimeter and Area Study Guide

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This study guide looks at the definitions and units for perimeter, area, and circumference, and at the perimeter and area of different shapes, including regular...
Handout
Math Open Reference

Math Open Reference: Similar Polygons and Triangles

For Students 9th - 10th Standards
A complete reference guide to similar triangles and polygons. It provides definitions and interactive activities that enhance further explanation.
Activity
Texas Instruments

Texas Instruments: Area Patterns

For Teachers 6th - 8th
Students investigate patterns in ordered pairs generated by constructing a sequence of similar shapes. They will then use the patterns and the calculator to predict the number of blocks it will take to build a specific shape in the...
Activity
National Council of Teachers of Mathematics

Nctm: Figure This: Math Challenges for Families

For Students 2nd - 8th
Students, teachers, and parents alike will enjoy this challenging math site. It contains a clever brain teaser section plus creative problems related to algebra, geometry, measurement, numbers, statistics, and probability. A Spanish...