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Centesimal Frame & Instrument for Measuring Angles

The calibrated wooden frame can measure a fraction, or fractions of the fraction circles into degrees.  Then, the centesimal frame demonstrates how fractions can be reduced to decimal fractions.

Original price was: R299Current price is: R289

In stock

SKU: CHM2011

In stock

Purchase this item and get 1 Bead - a worth of R3

Description

The centesimal frame & instrument for measuring angles, are both used together with the fraction circles.  They demonstrate how angles, and degrees, are measured into degrees, and then can be converted to decimal fractions.  These activities are aimed at the 9 to 12 year old.

Features of the Centesimal Frame & Instrument for Measuring Angles

  • the centesimal frame is a wooden plate with a recessed circle
    • the calibrations around the circle range from 0 to 100
    • position the fraction piece from the fraction circle, into this circle
    • the calibrated frame, converts the fraction from the metal fraction circle to a decimal
  • the instrument that measures angles, is a thick, wooden plate
    • this is calibrated in 360 degrees with a recessed circle
  • you can measure a fraction or fractions, from the metal fraction circles, using this instrument

Dimensions

Each board is 14 cm x 14 cm x 0.5 cm / ( 5½” x 5½” x ¼” )

Related Product

Further Reading and Resources

  1. How to use a centesimal frame

Additional information

Weight 0.190 kg
Dimensions 17 × 16 × 3 cm

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