index card

US /ˈɪn.deks ˌkɑːrd/
UK /ˈɪn.deks ˌkɑːrd/
"index card" picture
1.

fiszka, karta indeksowa

a small card used for writing notes, often for organizing information or for studying

:
She wrote her presentation notes on index cards.
Zapisała notatki do prezentacji na fiszkach.
He used index cards to study for his history exam.
Używał fiszek do nauki do egzaminu z historii.