1. chirigaku   algebra   biology   geography   zoology   Hint Half-n-half Clue   2. tenbungakushya   astronomy   geometry   botany   psychology   Half-n-half Clue   3. kikagaku   chemistry   trigonometry   philosophy   geometry   Half-n-half Clue   4. sankakuhou   history   trigonometry   geography   geology   Half-n-half Clue   5. butsurigaku   philosophy   biology   trigonometry   physics   Half-n-half Clue   6. bisekibungaku   history   geometry   calculus   geology   Half-n-half Clue   7. shinrigaku   geology   psychology   geometry   history   Half-n-half Clue