*Wee ones:* Fin whales are silvery-grey. Can you find 3 things in your room that are silver or grey?

*Little kids: *If a fin whale does 5 belly flops, what number is the second-to-last flop? * Bonus:* A fin whale can swim 23 miles an hour for a while, but for short bursts it can swim 6 miles an hour faster. What is the fastest it can it swim?

*Big kids:* Eels can be up to 13 feet long. How much longer is that 89-foot whale? *Bonus:* A fin whale weighs 80 tons! How many pounds is that? (*Reminder:* A ton equals 2,000 pounds.)

*The sky’s the limit:* If a whole bunch of kids lie end to end to be as long as that 89-foot whale, how many more 4-foot kids does it take to match the whale than 5-foot kids?

Answers:*Wee ones:* Items might include socks, shoes, aluminum foil, coins, or other metal objects.

*Little kids:* The 4th belly flop. *Bonus:* 29 miles per hour.

*Big kids:* 76 feet longer. *Bonus:* 160,000 pounds.

*The sky’s the limit:* 5 more kids. It takes 18 5-foot kids to make a chain longer than the whale, because 17 kids would be only 85 feet long. Then it takes 23 4-foot kids to be longer than 89, because 22 kids would be just 88 feet long. So we need 23 kids instead of 18.