b'MathematicsYellow Triangles For Area Stand For HeightThis material is used as an introduction to the study of area.A stand for plane geometric form exploration that Through exercises with these triangles, the child discoversfacilitates in the measurement of height of the how the area of a triangle is derived. The material containsConstructive Triangles. Scale is in centimeters.20 yellow, square ruled figures for the exercises of areaItem Number: 012600stored in a beechwood box with lid. $81.95Item Number: 012700$239.95Large Fraction Skittles Instrument For TheThe Centisimal FrameThe Large Fraction Skittles representMeasurement Of Angles This material is used with the divisors of whole, 1/2, 1/3, and 1/4 andThis material is used with theFraction Circles to demonstrate are used with the Fraction Circles toFraction Circles to demonstrate howhow fractions may be reduced to work equations in division. angles are measured in degrees. Thedecimal fractions. The Centisimal Item Number: 011300 Instrument For The MeasurementFrame is a thick metal plate with $269.95 Of Angles is a thick metal platea recessed circle for positioning calibrated in 360 degrees with athe fraction piece to be converted Skittle Stand recessed circle for positioning ato a decimal, and is calibrated fraction piece to be measured. from 0 to 100.A hardwood stand for storing and carrying the Large Fraction Skittles. Item Number: 012400 Item Number: 012500$49.95 $49.95Item Number: 0113A0$44.95FractionFraction Circles Circles Stands: (2)Fraction Circles introduce the child to the concept of fractions.2 stands designed to each hold five Fraction Circles The child is introduced to all aspects of fraction work, i.e.,for storing and carrying.correct terminology, equivalency, arithmetic functions,Item Number: 0114A0conversion to decimals, measurement of angles, etc. $91.95Item Number: 011400$419.95Nienhuis Montessori 87'