Goats eat just about anything: meat, veggies, cardboard, clothing – and plain old grass, too. That’s why the company Goats R Us is so smart: they use goats to mow people’s lawns. Why push a lawn mower when a goat is happy to chew down that grass for you? Goats R Us owns hundreds of goats, and places like airports and big companies hire those goats to keep their grass nice and short. And the goats get to eat while they work.

*Wee ones:* If you’re in charge of 6 goats, what numbers do you say to count them? Put 6 things on the counter and count them up.

*Little kids:* If the goats start their job in June and finish the next month, in what month do they finish? *Bonus:* If it takes them exactly 2 months to eat through all of Berkeley Lab, how many times can they clear the lawn in 1 year? (*Hint if needed:* A year has 12 months.)

*Big kids:* If the goats take 5 weeks to eat through the lab’s whole space, how many days is that? *Bonus:* How many hooves do those 800 trotting goats have?

*The sky’s the limit:* If the perimeter (the distance around the edge) of a rectangular field is 40 feet, and the sides are all round numbers of feet, what’s the biggest area of grass it could hold for the goats to eat?

Answers:*Wee ones:* 1, 2, 3, 4, 5, 6.

*Little kids:* In July. *Bonus:* 6 times in a year.

*Big kids:* 35 days. *Bonus:* 3,200 hooves.

*The sky’s the limit: *100 square feet, or 10 feet per side (10+10+10+10). For any amount of edge, the most area it can contain will be the perfect square that uses that amount of fence. So we divide the perimeter by 4 to get the 4 equal sides of a square.