Practice these words
3 levels: flashcards, quiz, and writing
bell
ringing metal object
born
came into existence
bulb
light fixture
century
period of 100 years
company
business firm
discover
find
equation
Mathematical statement with equal sides
formula
mathematical equation
instead
in place of
invent
inside, within
light
not dark
machine
device with moving parts
relative
family member
theory
system of ideas explaining something