微积分学

• 禾(grain; rice plant)RADICAL
• 只(only; sole)PHONETIC

Accumulation is gathering one grain of rice at a time until the granary is full.

• 八(divide; separate; eight)ASSOCIATIVE
• 刀(knife; blade; sword)RADICAL

Using a knife to chop something in half represents division or separation.

• ⺍(two hands (indicating learning))ASSOCIATIVE
• 冖(roof; house)ASSOCIATIVE
• 子(child)RADICAL

A child sitting under a roof with two hands diligently studying represents learning.