question: Write a question you would see in a school textbook. OPTIONS:
- substituting a different coin
- flipping the coin twenty more times
- taping a weight to one side of the coin
- flipping the coin over a smoother surface
answer: A student flips a coin four times. It lands "heads" up three times. The student concludes that the coin will land "heads" up three times out of four. What will make the conclusion more accurate?

question: Write a question you would see in a school textbook. OPTIONS:
- argon
- nitrogen
- nitrous oxide
- carbon dioxide
answer: Which gas makes up the greatest percentage of Earth's atmosphere?

question: Write a question you would see in a school textbook. OPTIONS:
- fly south
- find food
- protect their young
- survive the winter
answer:
Some birds build nests in the spring. This nest building is a seasonal adaptation that occurs to help the birds