| 摘要 |
A teaching aid computer, requiring no electrical or spring power, designed for elementary and middle school students, that when properly set and manipulated, provides real number solutions to equations involving multiple degree, as well as single degree unknowns. Parallel, interconnecting balancing beams are marked so as to provide adjustable positions for weights, whose resultant torques represent equation constants and coefficients of each degree of the unknown quantity. Further, by positioning and clamping movable axes beams, students can see and feel the results of adding or subtracting a few, or a series of numbers. Also, sliding beams, as well as sliding weights captively located in channels of each beam, with no required extra loose weights, allow simple decimal settings and answers to equations involving multiplication, and division. Being non-electronic, the student can understand the simple, visable, teeter-tooter-like workability of the repeated mechanical advantages and torque transfers from beam to beam, prior to beam and equation balancing, with this computer; and so gain confidence in rapidly discovering an answer, and also a range of non-answers, to a third degree equation, for example.
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