One is one...or is it? - Christopher Danielson
1,570,637 Views
7,334 Questions Answered
TEDEd Animation
Let’s Begin…
One bag of apples, one apple, one slice of apple -- which of these is one unit? Explore the basic unit of math (explained by a trip to the grocery store!) and discover the many meanings of one.
Our number system is called a place value system because the value of a digit depends on its place in the number. The speaker in the video used the example of 1; sometimes it means one thing, sometimes it means one group of things, etc. In Roman numerals, there is a separate symbol for ten. I means one, but X means ten. You may know that XI means eleven, while IX means 9. Should we call Roman numerals a place value system? Discuss.
Sign in to answer questionAbout TED-Ed Animations
TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »
Meet The Creators
- Director Biljana Labović
- Artist Celeste Lai
- Educator Christopher Danielson
- Animator Franz Palomares
- Narrator Christopher Danielson
