Schools aren’t just for people, you know. A lot of classrooms have a live animal as a class pet. Whether it’s a hamster, a lizard, or an aquarium full of fish, the class pet is your buddy: you can pat it, chat with it, and maybe even give it the parts of your lunch you don’t want. Hershey and Snickers, the Bedtime Math guinea pigs shown here, will happily eat your leftover carrots. But any animal is basically an eating, drinking and pooping machine. Who takes care of all these critters over the weekends or holiday breaks? More often than not, the pets get to go home with a student, and that lucky student might be you. Let’s do the math to make sure these critters are getting enough attention.
Wee ones: If you get to feed Floppy the fish on the 2nd day of the month, then the 4th, then the 6th…when do you feed Floppy next?
Little kids: If someone needs to feed the hermit crabs every 3rd day starting on a Sunday, on what day do they eat for the 3rd time? Bonus: If Hershey and Snickers each eat 5 big carrot sticks each day, how many do they eat in total when you take them home for a 2-day weekend?
Big kids: If there are 35 week(end)s of school and your class has 23 kids, and you each take a turn bringing home Godzilla the gerbil, how many kids get a 2nd weekend with Godzilla? Bonus: If all but 7 kids are allergic to gerbils, how many times do those lucky 7 kids each get to take Godzilla?
Wee ones: On the 8th day.
Little kids: On Saturday. Bonus: 20 sticks, since together they eat 10 each day.
Big kids: 12 kids. Bonus: 5 times each.