Unit Plan
CK-12 Foundation

Ck 12: Geometry: Segments From Secants and Tangents

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] This concept teaches students to solve for missing segments created by a tangent line and a secant line intersecting outside a circle.
Interactive
CK-12 Foundation

Ck 12: Isosceles Triangles

For Students 7th - 9th Standards
[Free Registration/Login Required] Students are given an Isosceles triangle and are asked to move the point on the line segment to explore how the angle measure changes. Click learn more to watch a video demonstration and click challenge...
Activity
CK-12 Foundation

Ck 12: Quadrilateral Classification

For Students 9th - 10th
[Free Registration/Login Required] Students will move the vertices of the quadrilateral to form the congruent quadrilateral. Click learn more to watch a video and click challenge me to answer a practice question.
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.
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.
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.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Relation of Polygon Sides to Angles and Diagonals

For Students 6th
[Free Registration/Login may be required to access all resource tools.] Find interior angle measures of polygons by drawing diagonals to create triangles.
Unit Plan
CK-12 Foundation

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

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] Students practice classifying various two dimensional shapes as rectangles, squares, circles or triangles.
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.
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.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Determining the Unknown Angle in an Isosceles Triangle

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 finding the missing angle in an isosceles triangle.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Determining Unit Shapes From Tessellations

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Students watch a video to determine unit shapes from a tessellation and then take an assessment to test their knowledge.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Determining Whether a Given Shape Can Be Tessellated

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Students watch a video to determine if a two dimensional shape can be tessellated and then take a quick assessment to test their skills.
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.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Identifying Straight Lines in Various Shapes

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 determining if there are straight lines in various two dimensional shapes.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Matching Equivalent 2 D Shapes

For Students 3rd - 5th
[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems on matching equivalent 2D shapes.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Matching Equivalent 2 D Shapes

For Students 4th - 5th Standards
[Free Registration/Login may be required to access all resource tools.] For this learning module, students are asked to match a given shape with those that are equivalent or the same type. Includes video demonstrating a sample problem...
Interactive
Math Playground

Math Playground: Shape Inlay Game

For Students 3rd - 8th Standards
Drag and drop shapes into a puzzle to explore tessellations.
Handout
Merriam-Webster

Merriam Webster: Dictionary Illustration: Parabola

For Students 9th - 10th
A labeled illustration of a parabola.
Lesson Plan
National Council of Teachers of Mathematics

The Math Forum: Building Shapes

For Teachers 3rd - 5th Standards
Based on building a hexagon, this activity from the Math Forum collection focuses on using different combinations of pattern blocks to create a hexagon. An online activity, pencil and paper method, literature connections, and a...
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Extend Numerical Patterns

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Extend numerical patterns by identifying and following rules
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
Other

Visnos: Polygons

For Students 1st - 8th Standards
Create regular and irregular polygons and determine the angles and side lengths with this interactive exercise. Use Safari or Chrome browser.
Activity
University of Cambridge

University of Cambridge: Maths and Sports: Olympic Rings

For Students K - 1st Standards
This activity explores shapes and circles by encouraging children to look really hard at something they will see very often in the run-up to London 2012, and is designed to be accessible to primary pupils at Key Stage 1.

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