Answer:

Amelia's teacher called her in one day and told her that she was really proud of her because when a student fell and hurt her knee, she was the only one that wasn't laughing. However, when Amelia replied back to her teacher, she said she would've laughed if she could've. Why didn't she laugh?

If there are three apples and you take away two, how many do you have?

When you put this in a heavy wooden box the box will become lighter

When does 4 - 1 = 5 ?

What can you stick between a 3 and a 4 so that the result is more than three but less than four?

What has 13 hearts but none beat?