Flip N Fraction Geoboard with Circle Cuts for School Maths Lab

Quick Answer: Flip N Fraction Geoboard with Circle Cuts for School Maths Lab is a pin board on which students stretch rubber bands to divide a circle into equal parts and name the fractions they make. The fraction geoboard links fractions of a circle with equivalence and with angles at the centre.

Cutting a Circle into Equal Parts

The name describes the idea. ‘Circle cuts’ refers to a circle whose edge is divided by pins into equal parts, and ‘flip’ points to a board with a second usable face. On the circle, a band stretched from the centre pin to two pins on the edge encloses a sector. By choosing which pins to use, students make halves, thirds, quarters or sixths of the circle, depending on how many equal divisions the edge carries.

Because every part is anchored at the same centre, equivalence is easy to show. A band enclosing two quarters covers exactly the same region as a band enclosing one half, and three sixths cover the same region again. Pupils record each result as a fraction statement, such as 2/4 = 1/2, and then check it by counting divisions.

Each sector also has an angle at the centre, which is the fraction multiplied by 360 degrees. A quarter makes a right angle, a third makes 120 degrees and a sixth makes 60 degrees. That link prepares pupils for pie charts, where the same calculation turns data into sectors. The pin layout on the reverse face, which in flip-style boards is often a square grid for area and perimeter work, should be confirmed with the supplier.

Specifications

Applications

• Making halves, thirds, quarters and sixths of a circle with rubber bands
• Showing equivalent fractions such as 2/4 = 1/2 on one circle
• Finding sector angles by multiplying the fraction by 360 degrees
• Preparing pupils to draw pie charts from fraction data

Care & Handling

• Teach pupils to stretch bands away from their faces and to release them slowly.
• Remove all bands after use so they do not perish on the pins of the fraction geoboard.
• Store the board flat so no pins are bent in a stack.

Why Choose LabEquip

Primary and middle-school teachers who want one board for fractions of a circle and general pin-board work usually choose this model. LabEquip lists it in Mathematics School Lab Products alongside the plain Geoboard; ask about quantities through the contact page.

Frequently Asked Questions

How are fractions shown on the circle side?

A rubber band is stretched from the centre pin to two pins on the edge, enclosing a sector. The number of equal divisions it covers, out of the total round the circle, gives the fraction, such as 3 out of 12, which is one quarter.

How do students find the angle of a fraction sector?

Multiply the fraction by 360 degrees, since a full turn at the centre measures 360 degrees. A quarter gives 90 degrees, a third 120 degrees and a sixth 60 degrees.

How is equivalence shown on the board?

Pupils enclose two quarters with one band and one half with another. Both bands cover the same part of the circle, so 2/4 and 1/2 are equal. The same check works for 3/6, 4/8 and other equivalents the pins allow.

Which fractions can be made on the board?

That depends on how many equal divisions the circle has, so confirm this when you enquire. A circle with 12 divisions, for example, gives halves, thirds, quarters, sixths and twelfths.

How is this board different from a plain geoboard?

A plain geoboard usually has a square grid of pins for shapes, area and perimeter. This board adds a divided circle for fraction sectors, with a second face for other work, so one board covers both topics.

What rubber bands work well on a geoboard?

Medium-sized, fairly thick bands are easier for young hands and less likely to snap than thin ones. Keep a spare supply, since bands wear out with use.

Last Updated: September 2026