Fit these clear plastic rings around Fraction Circles to explore degrees, time, percent, and more!
These clear plastic rings fit around Fraction Circles to show the relationships among fractions, decimals, and percents (¼ = 0.25 = 25%); to demonstrate the equivalence of minutes and fractional parts of an hour (15 minutes = ¼ hour); and to express fractional parts of a circle in degrees (¼ of a circle =90°). Each of the five rings in the set is divided into equal intervals, contains a well-marked scale including a “0” to indicate a starting.
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WIRE COPPER – GUPTA BRAND 10007028A
This is general-purpose high conductivity enamled copper wire with a thin coating of flexible insulating plastic. This is an ideal wire for coil and transformer etc
WIRE EUREKA/CONSTANTIN – GUPTA BRAND 10007028D
A copper nickel alloy of low temperature coefficient suitable for resistance coils etc.
WIRE GAUGE – GUPTA BRAND 10007021C
With folded edges.
WIRE MANGANIN – GUPTA BRAND 10007028C
An alloy of manganese, nickel and copper, having a low temperature coefficient. This wire is particularly suited to construction of resistance coils etc., or any application where accuracy of ohmic value is the important factor and electrical loading is low
WIRE NICHROME – GUPTA BRAND 10007028B
A nickel-chromium iron alloy specially suitable for high temperature applications such as heating elements, rheostats etc.