1975-08-14
1976-12-14
Grieb, William H.
35 72, 35 73, 46 1R, G09B 2302, A63H 3342
Patent
active
039966755
ABSTRACT:
An instructional birthday cake toy which has a recreational and educational function for children. The cake comprises various pie-wedge shaped fractional divisions to teach the concepts of fractions by forming various available combinations of pieces. Using the parts, fractions of one-half, one-third, one-fourth, one-sixth and so on can be expressed. The pieces may be placed together in various combinations on a shallow plate having various compartments to hold certain of the fractions and embossed to indicate which fraction is demonstrated. To show various combinations, two 1/6 wedges of one color, two 1/12 wedges of a different color and a remaining 1/2 piece of a third contrasting color are employed.
Individual letters can be readily attached to the top surface of the cake using temporary fasteners and removed to form, for example, "happy birthday" to teach familiarity with the use of letters to form words.
Artificial candles fit holes at the perimeter of the top surface of the cake to teach basic arithmetic concepts.
REFERENCES:
patent: 267402 (1882-11-01), Bynon
patent: 1535706 (1925-04-01), Wooster
patent: 2611193 (1952-09-01), Davis
patent: 3866919 (1975-02-01), Powell
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