Figure This: Math Challenges for Families offers 80 downloadable and printable math challenges to ponder and solve.
Some of the challenges are:
- How long do you have to stand in line?
- How fast does your heart beat?
- Which shape holds the most popcorn?
- Why aren’t manhole covers square?
- What letters can be read the same upside down as right-side up?
- How many different ways are there to get to your destination?
- Which sequence grows the fastest?
You can access those and more here: http://www.figurethis.org/challenges/challenge_index.htm