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Lesson Plan
Better Lesson

Better Lesson: Introduction to Angles

For Teachers 2nd
See this instructional activity to help students to learn about angles and identify the number of angles in 2D shapes. Lesson plans includes introductory activity, guided practice, and independent practice.
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Lesson Plan
PBS

Pbs Mathline Lesson: Geometry, It's a Perfect Fit [Pdf]

For Teachers 3rd - 5th Standards
This two-part geometry lesson plan has students identify, describe, and classify two-dimensional shapes. Students engage in hands-on activities including identifying shapes in the classroom, creating patterns with shapes, identifying...
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Activity
Science Museum of Minnesota

Science Museum of Minnesota: Tops

For Students 3rd - 5th
In this lesson make a spinning top to explore the concepts of shape, color, spinning, and optical illusions.
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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.
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Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Identifying Rectangles Squares Circles and Triangles

For Students 3rd - 5th
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview and attempt practice problems on identifying rectangles, squares, circles and triangles.
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Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Classify Objects as Rectangles, Squares, Circles, or Triangles

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 classifying rectangles, squares, circles and triangles.
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Lesson Plan
Better Lesson

Better Lesson: Fat or Flat?

For Teachers K Standards
Students will tell if a shape is 2-dimensional or 3-dimensional.
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Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Count Rectangles, Square,s and Triangles in Composite Figures

For Students 1st - 2nd Standards
[Free Registration/Login may be required to access all resource tools.] The video defines a composite shape and shows how to determine the total number of triangles in the given shape. The video is followed by practice problems to assess...
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Handout
PBS

Pbs Learning Media: Cross Sections of a Cube

For Students 3rd - 8th Standards
This interactive exercise focuses on discovering the relationships between two and three-dimensional shapes.
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Unit Plan
Math Planet

Math Planet: Pre Algebra: Measure Areas

For Students 4th - 6th Standards
Demonstrates how to calculate the area of two-dimensional shapes using formulas. Covers parallelogram, triangle, trapezoid, and circle. Includes a video modeling how to find the area of a circle and a triangle. [0:59]
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Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Identifying Rectangles, Squares, Circles, and Triangles

For Students 1st - 2nd Standards
[Free Registration/Login may be required to access all resource tools.] The video discusses a brief overview of circles, rectangles, squares, and triangles and helps students determine which shape is shown and why. The video is followed...
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Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Shape Sorter

For Students 2nd - 8th Standards
Students learn how to categorize plane figure polygons using Venn Diagrams with this computer based tool.
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Whiteboard
ClassFlow

Class Flow: Shapes

For Teachers Pre-K - 1st Standards
[Free Registration/Login Required] Students are challenged to identify and name common 2D/3D shapes.
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Activity
Shodor Education Foundation

Shodor Interactivate: Shape Explorer: Area and Perimeter

For Students 9th - 10th
An applet activity that provides an exercise in working with perimeter and area of 2D objects. The user is given a random figure and allowed to enter a value for the area and perimeter. Use the "How" and the "Why" button to assist you....
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Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Completing the Whole Pictures

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Students watch a video and then attempt practice problems on how to complete a whole picture with some missing parts.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 7.g,rp Measuring the Area of a Circle

For Teachers 7th
In this lesson plan, 7th graders answer word problems to determine the area of a circle.
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Activity
CK-12 Foundation

Ck 12: Tessellations: Hexagon Tessellation

For Students 6th - 8th
[Free Registration/Login Required] Students determine whether a hexagon can tessellate or not. Click challenge me to answer practice questions and click learn more to watch a video.
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Activity
CK-12 Foundation

Ck 12: Tessellations: Tessellating Squares

For Students 6th - 8th
[Free Registration/Login Required] Students determine if squares can tessellate. Click challenge me to answer practice questions and click learn more to watch a video.
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Activity
CK-12 Foundation

Ck 12: Tessellations: Triangle Tessellation

For Students 6th - 8th
[Free Registration/Login Required] Students will explore tessellations and whether a polygon can tessellate. Click challenge me to answer practice questions and click learn more to watch a video.
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Interactive
GeoGebra

Geogebra: Copy of Classify Two Dimensional Figures

For Students 4th - 6th Standards
User will drag the vertices of the quadrilaterals to decide on the best possible classification.
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Activity
National Council of Teachers of Mathematics

Nctm: Figure This: Fire Hydrant

For Students 3rd - 8th Standards
Discover how the geometric shape of an object directly relates to its usefullness in this math challenge from the NCTM Math Challenges for Families collection. A one page activity that you can print or download.
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Interactive
CK-12 Foundation

Ck 12: Math Grade 2

For Students 2nd
Browse resources related to second-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.
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Interactive
CK-12 Foundation

Ck 12: Math Grade 3

For Students 3rd
Browse resources related to third-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.
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Interactive
CK-12 Foundation

Ck 12: Math Grade 4

For Students 4th
Browse resources related to fourth-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.

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