(1)-- download from link 1
(2)-- download from link 2
(3)-- download from link 3
(4)-- project of dye electromagnet
(5)-- make a rainbow
(6)-- determining the age of trees
(7)-- burning candles of science
(8)-- make a robot
(1)-- download from link 1
(2)-- download from link 2
(3)-- download from link 3
(4)-- project of dye electromagnet
(5)-- make a rainbow
(6)-- determining the age of trees
(7)-- burning candles of science
(8)-- make a robot
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