History: Which of the following is _not_ one of the eight big ideas?

Which of the following is not one of the eight big ideas?

• Learn Together
  When we learn together we often learn faster
• Do Everything at a Time
  Correct, this answer doesn't make sense!
• Make It Real
  Being real improves applying knowledge to real life
• Adapt to Prior Knowledge
  If the content is too easy or too hard...