Circle Geometry Board

Interactive, free online geometry tool from GeoGebra create triangles, circles, angles, transformations and much more!

Concentric Circles Use rubber bands to create concentric circles by stretching them around pegs in circular patterns. This demonstrates the concept of circles with different radii. Geometric Animals Get creative and use the geoboard to form geometric representations of animals. For example, you can make a fish by connecting pegs in a fish

Switch between the standard 25-peg square board, a rectangular board with 150 pegs, or a circular board with 13 pegs. Duplicate shapes, then move, reflect, and rotate them to explore symmetry and congruency. Display grid lines with or without numbering to more easily calculate area and identify shape locations.

Circle Geoboard. Virtual Circle Geoboard. Geometry Labs free download Angles Labs 1.7-1.9 Symmetry Lab 5.5 Area Labs 9.5, 11.7 Basic trig Labs 11.1-11.7 All but the trig activities can be done on any circle geoboard. The trig activities require the CircleTrig geoboard. Also on this site excerpts from Geometry Labs Angles The 10cm

3D geometry, shape and space. Transformations and constructions. Pythagoras and trigonometry. To change the size of the board use the slider. You can choose whether your geoboard has a centre peg. the Printable Resources page has links to printable sheets of circles with a range of numbers of circumferential dots.

Using the Circle Geoboard. Geoboards are awesome for teaching math concepts. The fun of the circle one is that you can do circle fractions. You can teach area and perimeter and diameter. You can make radial designs with symmetry that are tons of fun! We were doing pie fractions and it ended up as a peace sign! And one more fun creation we made

Draw circles and arcs. Work on foundational math skills and have students gain hands-on experience with concepts such as radius, diameter, and circumference. Have students come to the board to practice, or have them follow along at their own desks with your demonstrations on the board. Build familiarity with mathematical tools.

A line that quotjust touchesquot the circle as it passes by is called a Tangent. A line that cuts the circle at two points is called a Secant. A line segment that goes from one point to another on the circle's circumference is called a Chord. If it passes through the center it is called a Diameter. And a part of the circumference is called an Arc.

Learn how to make a circle geoboard with nails and wood. This is a fun and easy project that kids can help make, too! Use it for math lessons on shapes and

Geoboard is a tool for mathematical exploration. Stretch bands around the pegs to form line segments and polygons, and make discoveries about perimeter, area, angles, congruence, fractions, and more.