Texas Instruments
Texas Instruments: Rotations in the Plane With Cabri Jr.
A rotation is a transformation that turns a figure a certain number of degrees about a certain point. This activity explores the properties of rotations and the relationships between the original and image figures.
BBC
Bbc News: Polish President Lech Kaczynski Dies in Plane Crash
View video footage from the scene of the plane accident that claimed the life of Polish President Lech Kaczynski, the first lady and key figures in the Polish Government. Was it pilot error, or that the Soviet-designed plane was more...
Texas Instruments
Texas Instruments: Working With Point Rotations in the Coordinate Plane
Using Cabri Jr. and the properties of rotations to get a true understanding of how a figure is rotated about a point.
Texas Instruments
Texas Instruments: Dilations in the Plane (Transformations)
In this activity, students will explore the properties of dilations and the relationships between the original and image figures.
OER Commons
Oer Commons: Exploring Cross Sections
Students will explore the cross-sections that result when a plane cuts through a rectangular prism or pyramid. Students will also see examples of cross-section cuts in real-world situations.
National Council of Teachers of Mathematics
Nctm: Illuminations: Isometric Drawing Tool
This site includes an interactive math tool to create drawings on isometric dot paper. You can draw figures using edges, faces, or cubes. Rotate and color your drawings, and view them in 3D or 2D.
GeoGebra
Geogebra: Copy of Classify Two Dimensional Figures
User will drag the vertices of the quadrilaterals to decide on the best possible classification.
CK-12 Foundation
Ck 12: Elem Math: Counting Different 2 D Shapes Within Complex Composite Figures
[Free Registration/Login may be required to access all resource tools.] The video describes how to determine how many triangles are needed to create the complex composite shape.
Cuemath
Cuemath: Coordinate Geometry
A comprehensive guide for learning all about Coordinate geometry with definitions, the coordinate plane, formulas, equation of a line, related topics, solved examples, and practice questions.
Shodor Education Foundation
Shodor Interactivate: Triangle Explorer
This applet allows users to study the nature of triangles and their area. It draws random triangles on a Cartesian coordinate system. The user can determine the area of the triangle using his or her preferred method. After the calculated...
Alabama Learning Exchange
Alex: Geometry City
This lesson plan reviews transformations in the coordinate plane while mimicking real-world planning skills. It gives an assessment and ideas for remediation, extention as well as ways to manage behavior problems and reluctant learners.
National Council of Teachers of Mathematics
Nctm: Figure This: Fire Hydrant
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.
Sophia Learning
Sophia: Finding Area With Squares: Lesson 3
Step by step, this video lesson [2:41] will show you how to add up the number of squares that cover an object in order to find the area of a figure. It is 3 of 7 in the series titled "Finding Area with Squares."...
Instituto Latinoamericano de la Comunicacion Educativa
Red Escolar: Recortando Geometria
In Spanish. In this site you will find different activities involving geometric plane figures.
National Council of Teachers of Mathematics
Nctm: Illuminations: Shape Sorter
Students learn how to categorize plane figure polygons using Venn Diagrams with this computer based tool.
Alabama Learning Exchange
Alex: Determine the Vertices of Transformed Images
This hands-on lesson plan uses exploration and discovery to help students determine the coordinates of the vertices of various figures when translated, rotated, or reflected in a coordinate plane. The exploration phase will access...
National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: Corta en Dos
Try to find the line of symmetry of these 8 figures. If you find it the two figures should coincide.
CK-12 Foundation
Ck 12: Geometry: Quadrilateral Classification
[Free Registration/Login may be required to access all resource tools.] This concept teaches students to classify quadrilaterals in the coordinate plane.
University of Texas at Austin
Mathematics Teks Toolkit: Oh No! My Ominoes!
Explore pentominoes by determining congruent and non-congruent shapes.
CK-12 Foundation
Ck 12: Elem Math: Counting Straight Lines and Curves in Various Shapes
[Free Registration/Login may be required to access all resource tools.] The video shows how to count the number of straight lines and curves in a given 2D figure. The video is followed by practice problems.
Alabama Learning Exchange
Alex: Thinking Outside the "Box"
The students will find the area of each two dimensional figure on a net of a rectangular prism. In groups, students will cut out the net and create a rectangular prism. Groups will then discuss how to find the lateral area and the total...
CK-12 Foundation
Ck 12: Interactive Geometry: 1.6 Area or Perimeter of Triangles/ Quadrilaterals
Explore finding and measuring perimeter of figures.
Khan Academy
Khan Academy: Determine Translations
Given two figures on the coordinate plane, find the formal definition of the translation that takes one figure to another. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or...
Khan Academy
Khan Academy: Rotate Shapes: Center Not (0,0)
Given a figure on the coordinate plane and the definition of a rotation about an arbitrary point, draw the image of that rotation. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video,...
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