# Extreme Eels

Here's your nightly math! Just 5 quick minutes of number fun for kids and parents at home. Read a cool fun fact, followed by math riddles at different levels so everyone can jump in. Your kids will love you for it.

# Extreme Eels

October 11, 2015

Eels are like snakes of the ocean: they’re skinny and wiggly and have no legs. But while snakes are reptiles, eels are actually fish. Then we have the most exciting of all, the electric eel — which isn’t an eel at all, but a type of knifefish. Electric eels grow to over 6 feet long, and use electricity to shock and drive away animals who might try to eat them. An electric eel can pack a 600-volt shock! Just to compare, those little AA batteries in your toys are only 1 1/2 volts each.  The good news is, when electric eels are just swimming around minding their own business, they send out a much nicer 10-volt signal. That sounds like a level of power that could work for our toys…as we’ll see from the math, an electric eel could be a very useful pet.

Wee ones: If you have 3 pet electric eels and 6 non-electric eels, which animal do you have more of?

Little kids: How many legs would you, your pet dog and your pet electric eel have together?  Bonus: If you have 4 pet electric eels and each one can light up 2 light bulbs, how many bulbs can they light up together?

Big kids: If every electric eel makes 4 volts of electricity, can 8 electric eels run your 44-volt ice cream maker?  Bonus: How many 4-volt electric eels in total would you actually need?

The sky’s the limit: If an eel can really shock you with 600 volts, how many  1 1/2-volt AA batteries do you need to match that? (Hint if needed: How many 3-volt batteries would you need?)