Worksheet
Curated OER

Introducing Polygons

For Students 3rd - 5th
In this polygons worksheet, students name the 6 different colored shapes, choose any 3 polygons to draw and color on a grid, while adding a right angled triangle and a rhombus.
Lesson Plan
Dick Blick Art Materials

Start with a Circle...

For Students K - 12th
The Golden Ratio. The Divine Proportion. Yup. It's math and art blended into one colorful activity. Young artists combine colored tissue paper circles and parts of circles to create geometric patterns. As a bonus, kids get to figure out...
Lesson Plan
Curated OER

Our Geometic World

For Teachers 1st - 5th
Students walk around the neighborhood and identify various polygons and lines in buildings, nature and other objects. They design a building using various geometric patterns, shapes and lines. Students complete a descriptive writing of...
Lesson Plan
Curated OER

Define Geometry Terms

For Teachers 3rd - 5th Standards
The Common Core is intended to help all children meet high academic standards. Here is a Common Core designed lesson that is intended for learners with communication or language difficulties. The lesson is written in a narrative style...
Worksheet
Curated OER

Rounding

For Students 3rd - 4th
In this rounding worksheet, students solve 40 problems in which whole numbers are rounded to the nearest 10. 100 or 1000. Students also round to the nearest dollar.
Worksheet
Curated OER

Geometry

For Students 3rd - 5th
In this geometry review game worksheet, students use the provided game cards and calling cards to play a Bingo-like game. Students learn geometric terms while playing a group game.
Lesson Plan
Curated OER

Human Geometry Book

For Teachers 3rd - 5th
Students investigate geometric shapes. In this geometry lesson, students read the book The Greedy Triangle and define the shapes mentioned in the book. Students make the shapes by using their bodies.
Lesson Plan
Curated OER

Geo-Mat

For Teachers 1st - 3rd
Students review plane figures by playing a game that resembles "Twister." They listen to directions to locate a large example of the figure which is placed on the floor.
Lesson Plan
Curated OER

Ovals, Rectangles, Squares, and Triangles

For Teachers 3rd - 5th
Students identify geometrical shapes displayed in photographs of everyday objects in a metropolitan setting.
Unit Plan
Scholastic

Scholastic: Study Jams! Math: Geometry: Classify Angles

For Students 3rd - 6th Standards
Watch and learn how to classify angles then test your knowledge.
Handout
Quia

Ixl Learning: Types of Angles

For Students 3rd - 5th Standards
Brush up on your math skills pertaining to types of angles then try some practice problems to test your understanding.
Lesson Plan
Better Lesson

Better Lesson: Finding Angles

For Teachers 3rd - 4th Standards
The three types of angles, right, acute, and obtuse, exist in our everyday surroundings. Learners find these angles using classroom items.
Lesson Plan
Alabama Learning Exchange

Alex: Angle Scavenger Hunt

For Teachers 3rd - 5th Standards
In this lesson, students will explore straight, right, acute, and obtuse angles. Students will go on a scavenger hunt throughout the school to search for examples of these types of angles. The students will use digital cameras to record...
Lesson Plan
Shodor Education Foundation

Shodor Interactivate: Lesson: Angles (Elementary)

For Teachers 3rd - 5th Standards
In this lesson students will learn what determines whether an angle is acute, obtuse or a right angle.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Classifying Right Obtuse or Acute by Angle Measure

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems on how to classify triangles based on angle measures.
Activity
Math.com

Math.com: Building Blocks: Classifying Angles

For Students 3rd - 8th Standards
This geometry resource investigates types of angles. Definitions, detailed examples, and practice problems are included.
Whiteboard
ClassFlow

Class Flow: Angle Tester

For Teachers 3rd - 5th Standards
[Free Registration/Login Required] This flipchart reviews right, acute and obtuse angles with students. An Activote review is included at the end.
Whiteboard
ClassFlow

Class Flow: Angles Votes

For Teachers 3rd - 8th Standards
[Free Registration/Login Required] Using this flipchart, students will be able to identify various angles based on mathematical criteria. Questions are related to right, acute, and obtuse angles.
Unit Plan
Khan Academy

Khan Academy: Identify Triangles by Angles

For Students 3rd - 5th Standards
Practice identifying triangles by their angles as acute, right, or obtuse. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Lesson Plan
Shodor Education Foundation

Shodor Interactivate: Lesson: Angles

For Teachers 3rd - 8th Standards
This upper elementary and middle school lesson plan introduces the concept of acute, obtuse and right angles. Also, as the lesson proceeds vertical, adjacent, alternate interior and alternate exterior angles are explored. Plenty of...
Activity
Beacon Learning Center

Beacon Learning Center: Triangles Side by Side

For Students 3rd - 8th Standards
This comprehensive web lesson describes how to classify triangles by their angle and side measurements. It provides real-world examples and exercises for students to practice the skill.
Unit Plan
Khan Academy

Khan Academy: Draw Right, Acute, and Obtuse Angles

For Students 3rd - 5th Standards
Create an acute, right, or obtuse angle using a given vertex. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Counting Right Angles in a Diagram

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Practice counting the number of right angles in a diagram in this learning module. Includes video demonstration of a sample problem [2:11] and practice questions.
Unknown Type
Khan Academy

Khan Academy: Angle Types

For Students 3rd - 5th Standards
In this exercise, students practice identifying angle types. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

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