Just in time for back-to-school: New distance learning resources are available on Wide Open School.
Use Geometry Pad as a small-group exploratory activity following geometry lessons. For example, after kids learn about special triangles, have them construct specific triangles and measure their angles and/or sides to support various theorems. Kids can share their constructions with classmates and discuss their similarities and differences.Continue reading Show less
Geometry Pad is an interactive workbook that kids can use to create, manipulate, and measure figures. When kids first open the workbook, a numbered, four-quadrant grid is displayed. There are tool icons along the bottom of the grid, and settings and save options along the top. To get started, kids tap on the tool they wish to use and follow on-screen prompts in order to create a figure. Some of the more dynamic features include options to construct special triangles and quadrilaterals, a pencil to draw freehand annotations, and a tool to create bisectors, altitudes, and medians. Kids can save documents in various formats for easy sharing.
Geometry Pad is a reference tool, so kids don't get instruction or assessment. However, it's a great way for them to investigate geometric concepts in an interactive, yet unstructured, setting. Kids can deepen their understanding of shape attributes in a highly visual and interactive experience. They can explore features of circles, triangles, quadrilaterals, ellipses, vectors, lines, angles, and more. Using the tool also increases kids' confidence in the use of technology. Since the app doesn't include embedded instructions, it's a good idea to give kids plenty of time to learn how to use all the tools and features.
Key Standards Supported
(+) Construct a tangent line from a point outside a given circle to the circle.
Similarity, Right Triangles, And Trigonometry
Use congruence and similarity criteria for triangles to solve problems and to prove relationships in geometric figures.
Given two figures, use the definition of similarity in terms of similarity transformations to decide if they are similar; explain using similarity transformations the meaning of similarity for triangles as the equality of all corresponding pairs of angles and the proportionality of all corresponding pairs of sides.