| 摘要 |
PROBLEM TO BE SOLVED: To provide a learning material which is superior in assemblability and which enables a user to easily understand the principle of operation, which arouses user's interest in electricity in a natural manner through the use after assembly, and to continuously comprehend power consumption of electrical equipment with ease. SOLUTION: The material for learning comprises an electric current detection means; an electric power information calculation means for receiving the output from the electric current detection means and calculating electric power information; and an electric power information display means for displaying the electric power information calculated by the electric power information calculation means. COPYRIGHT: (C)2007,JPO&INPIT
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