Abstract
We have presented 10 experiments on rodks and minerals for primary school pupils to give motivation for future scientists and to prevent an anti-science trend of recent children. The contents are as follows: (1) stone with invisible eyes (quartz ball), (2) double-looking stone (calcite), (3) vaporing stone (calcite), (4) stone tasts salty (halite), (5) floating stone (pumice), (6) athletic competition of stones (peridotite and granite), (7) gleaming stone (fluorite), (8) stones hot in microwave (serpentinite), (9) stones attracting magnet (serpentinite), (10) stones spinning backward (rattlestone). The reason that the serpentinite becomes heated in microwave is not due to abuncance of hydrous mineral (serpentine) as I thought in my presentation of the last year, but is due to magnetite which absorbs microwave energy very well.
