Updated on March 5, 2017
These websites and apps have interactive geometry games, lessons, and activities to help kids and high school students learn geometry. They cover concepts ranging simple geometric shapes and angles, to interactive manipulatives, fractals, and theorems.
Use these instructions to construct geometric solids, or 3D geometric objects – polyhedra – from folded strips of paper. The author provides detailed, illustrated instructions for constructing many polyhedra, among them a cube (hexahedron), triangular prism, pyramid (Tetrahedron), on up…
This collection of geometry flexbooks includes online and downloadable editions of geometry textbooks covering topics from middle school geometry to advanced high school geometry postulates and theorems. Several of the textbooks have both student and teacher editions.
From site: Here we introduce some basic geometry of fractals, with emphasis on the Iterated Function System (IFS) formalism for generating fractals. In addition, we explore the application of IFS to detect patterns, and also several examples of architectural fractals.…
Mr. Martini’s Classroom provides an interactive review of geometry problems with points, lines and angles, angle measurement and use of a protractor, classifying polygons and finding perimeters, area of triangles and rectangles, classifying quadrilaterals and triangles, circles, circumference and area,…
Free Math Help Geometry provides textbook style lessons, flash video lessons for calculating angles, volume, area, graphs, and trigonometry functions. There are also links to other geometry resources and a glossary of terms.
From site: Geometry Student Resources are a collection of free resources for studentsstudying and/or reviewing a course in high school geometry.
There are more than 250 downloadable demonstrations to help students understand key concepts in high school geometry. The geometric demonstrations are interactive so the students and teacher can manipulate data, speed and factors that affect each of them.
Maths is Fun provides comprehensive detailed information on the basics of plane geometry and solid geometry. The broad variety of geometry shapes is pictured and discussed, as well as angles, drafting tools, transformations and symmetry.
This site provides an interactive overview of 3D shapes including polyhedra, prisms, pyramids, and platonic solids as well as Euler’s Theorem. Interactive illustrations help to clarify the shape types. There are also instructions for calculating surface area and volume, followed by…