Texas Instruments
Texas Instruments: Numb3 Rs: To Pythagoras and Beyond
Based off of the hit television show NUMB3RS, this lesson has students discover the Pythagorean relationships of different triangle types. By the end of the lesson, students should be able to take three given side lengths and compute...
ClassFlow
Class Flow: Angle This Way
[Free Registration/Login Required] Students will identify right, acute and obtuse triangles using many interactive tools available in ACTIVstudio 3.0. Students will be engaged using a magnifier tool, the fill tool, and drag and drop and...
The Math League
The Math League: Figures and Polygons
This site provides definitions of different types of polygons and figures.
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,...
OER Commons
Oer Commons: Pre Assessment
Students solve for missing angle measures by applying what they have learned about types of angles and the angle measures of polygons. Students do a pre-assessment at the end of the lesson.
CK-12 Foundation
Ck 12: Perpendicular Bisectors
[Free Registration/Login Required] Students will move point N to the other points to determine when the line bisects the triangle perpendicularly. Click learn more to watch a video and click challenge me to answer practice questions.
ClassFlow
Class Flow: Angles, Triangles and Quadrangles
[Free Registration/Login Required] This flipchart is designed to accompany fourth grade's Everyday Math (version 3) lesson 1.3, this flipchart explores different types of angles, triangles and quadrangles through engaging presentation...
E-learning for Kids
E Learning for Kids: Math: Riksjas, Toek Toek: Polygons
Explore polygons with Wang, a ricksha puller. Answer his questions and he will give you a free ride!
Alabama Learning Exchange
Alex: Card Table Project
Students will work in groups to design a card table. Students will communicate with each other through a class blog or class discussion page. Students will then work in groups to design a card table. After the design phase, students will...
Enchanted Learning
Enchanted Learning: World Flags
Enchanted Learning features this website devoted to the study of the world's flags. There are fact sheets, illustrations, current and historical flags, and related links.
Beacon Learning Center
Beacon Learning Center: Anglemania!
Students explore four types of angles in this interactive web lesson.
Better Lesson
Better Lesson: Tri, Tri, Tri Angle!
Kindergarteners love to identify shapes in their environment. In order effectively do that, they must be able to recognize different shapes by their specific attributes. In this lesson kindergartners learn about different types of...
CK-12 Foundation
Ck 12: Geometry: Polygon Classification
[Free Registration/Login may be required to access all resource tools.] Classify different types of polygons by their number of sides.
Varsity Tutors
Varsity Tutors: Hotmath: Review: Area
Find a quick, concise explanation of area and the formulas for different shapes. An example is given to help you understand how find the area of a shape. The area formulas are listed for different types of shapes.
Mathigon
Mathigon: Algebra: Sequences and Patterns
Explore this course in sequences and patterns including simple sequence, triangle and square numbers, terms, recursive formulas, and explicit formulas. Click on Trailer on the top left to watch an introductory video.
CK-12 Foundation
Ck 12: Geometry: Polygons Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide focuses on polygons: convex vs concave, interior and exterior angles, and basic terminology for common polygons.
Math Open Reference
Math Open Reference: Acute Angle
Learn about acute angles with this helpful reference tool. Provides a detailed definition, images, and an interactive activity that enhances further explanation. Includes links to related topics.
Rice University
Rice University: Cynthia Lanius: Hidden Polygon Activity
On this site students are instructed to locate different types of polygons on triangle grid paper. This page can be printed so that students can actually draw them. It also gives a definitions link for each polygon.
PBS
Pbs Teachers: Architecture: Community Geometry
Identify architectural structures and objects in the community that represent different figures and types of geometry and mathematics.
Math Open Reference
Math Open Reference: Full Angle
Explore full angles triangles with this handy reference guide. Provides a detailed definition and an interactive activity that enhances further explanation. Includes links to related topics.
Math Open Reference
Math Open Reference: Reflex Angle
Explore reflex angles triangles with this handy reference guide. Provides a detailed definition and an interactive activity that enhances further explanation. Includes links to related topics.
Analyze Math
Analyze Math: Sine Law Ambiguous Case Applet
Learn how the ambiguous case of the law of sines arises from the ASS situation and how to solve problems of this type. Definitely use the applet to visualize the two distinct outcomes that are possible and to understand the circumstances...
Illustrative Mathematics
Illustrative Mathematics: G Srt Similar Quadrilaterals
The goal of this task is to study if the analog of the AA criterion for similarity of triangles holds for different types of quadrilaterals. Aligns with HSG-SRT.A.2.
ClassFlow
Class Flow: Dissection Puzzles
[Free Registration/Login Required] If you like tangrams, you'll enjoy this flipchart. Dissect and arrange in different shapes all types of squares, triangles, and polygons.
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