Postcard changed color by thermal and education instruments thereof

摘要

To surround the outer surface of the said postcard; the present design is such learning parish set the case can hold the various components inside relates to learning parish set for making a heat-sensitive postcards; postcards are accommodated and in the casing eat can copy pictures or patterns printed on and the paint on the postcard; coating a sheet of transparent plastic to be processed; and a certain painting or a print pattern paint; And the dye is discolored by heat the printed thermosensitive film, it is characterized in that comprises a. This can vary depending on the color temperature by learning the parish set by the competent colors that fade not only that it is possible to measure the temperature of children can easily learn that, as well as the volume changes depending on the temperature of color that changes be able to learn through experience.