英文關鍵字
background
black
calculate
class
classroom
college
concept
concepts
conceptual
education
exam
five
flight
fly
formula
four
geometry
inside
knowledge
layer
learn
learning
lecture
lesson
math
mathematical
mathematics
nine
number
numbers
one
pattern
physics
school
science
seven
shine
six
solution
study
studying
symbol
symbols
teach
teacher
teaching
theory
three
two
university
white
write
zero