Khan Academy
Khan Academy: Area of Rectangles
Find area of rectangles and squares by multiplying side lengths. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Categorize Quadrilaterals
Classify and compare rectangles, rhombuses, and squares. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints. CCSS.Math.Content.3.G.A.1 Understand that shapes in...
Khan Academy
Khan Academy: Quadrilateral Types
Identify quadrilaterals based on pictures or attributes. Quadrilaterals included are parallelograms, rhombuses, rectangles, and squares. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...
Khan Academy
Khan Academy: Classify Shapes by Line and Angle Types
Classify shapes based on pictures or attributes, such as angle types and side-lengths. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Identify Quadrilaterals
Identify squares, rectangles, and rhombuses. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints. CCSS.Math.Content.3.G.A.1 Understand that shapes in different categories
CK-12 Foundation
Ck 12: Elem Math: Visually Identifying Quadrilaterals
[Free Registration/Login may be required to access all resource tools.] Cursor down if needed to locate the video "Visually Identifying Quadrilaterals (Trapezoids, Parallelograms, Rectangles, Squares, Rhombi)." Students watch a video and...
Illustrative Mathematics
Illustrative Mathematics: 4.g What Shape Am I?
In this task, students ultimately use the definitions they are given for three types of quadrilaterals and what they know about parallel sides to identify that a square fits all the definitions and explain why. Aligns with 4.G.A.2.
BBC
Bbc: Bitesize: Maths: 2 D Shapes
Learn about the properties of 2-D shapes: circles, triangles, polygons, and quadrilaterals. Includes information, video, and examples about each, with games and quizzes for reinforcement.
Alabama Learning Exchange
Alex: A What? A What? A Quadrilateral
In this lesson, students will identify the characteristics of a quadrilateral. Students will have a chance categorize quadrilaterals into subgroups such as squares, rhombuses, rectangles, and nonregular quadrilaterals. This lesson using...
Alabama Learning Exchange
Alex: "Polly"gon Pockets
Lesson plan that helps students explore the attributes of polygons through the use of cooperative groups. Students use jigsaw puzzles and foldable polygons. They also connect the attributes of specific polygons with objects in the real...
Better Lesson
Better Lesson: Finding Angles
The three types of angles, right, acute, and obtuse, exist in our everyday surroundings. Young scholars find these angles using classroom items.
Better Lesson
Better Lesson: Geometry Shape Book
Third graders develop their understanding of the importance of different 2-dimensional shapes by finding real world examples.
Better Lesson
Better Lesson: Area of Irregular Polygon
Third graders look for break apart irregular polygons to make arrays to find the area of these common shapes.
Better Lesson
Better Lesson: Quadrilateral or Parallelogram?
Third graders discover the differences between quadrilaterals and parallelograms with everyday items found in the classroom.
Khan Academy
Khan Academy: Analyze Quadrilaterals
Classify and compare rectangles, rhombuses, and squares.
National Council of Teachers of Mathematics
Nctm: Illuminations: Area of Rectangles
This applet allows for the exploration of the area of rectangles.
National Council of Teachers of Mathematics
Nctm: Illuminations: Igd: Area of a Parallelogram
This applet will show you how to divide the parallelogram into pieces, arrange them together to form a rectangle, and then use the formula for the area of a rectangle to find the area of the parallelogram.
Better Lesson
Better Lesson: Polygons Explore the Possibilities
Online drawing programs allow students to explore many possibilities with polygons!
Better Lesson
Better Lesson: Polygons: Introduction & Investigation
Interacting with polygons and testing the definitions can be engaging, fun and build a powerful, individualized understanding.
Better Lesson
Better Lesson: Measuring Our Classroom's Perimeter and Area!
Connect new measurement knowledge and skills to the students' immediate environment.
Better Lesson
Better Lesson: Great Buildings of the World: Create Your Own! (Day 1)
Creating their own building is a hands-on, minds-on way for students to explore how polygons create 3D solids.
Better Lesson
Better Lesson: Differences With Shapes
Differences between shapes are determined through measurement skills.
Shodor Education Foundation
Shodor Interactivate: Floor Tiles
Build a "floor tile" by dragging the corners of a quadrilateral. Learn about tessellation of quadrilateral figures when the shape you built is tiled over an area.
Math Open Reference
Math Open Reference: Trapezoid
Learn about trapezoids with this helpful reference tool. Provides a detailed definition, examples, and interactive activities that enhance further explanation. Includes links to related topics.