We all like different music from each other. You and your friend might like some of the same songs, but not every song, and your parents definitely don’t like all the same songs as you. So what about cows: do cows all like the same music? And is there one kind they like best? Scientists studied this a few years ago by playing different songs for cows to see if the cows made more milk during certain songs. They found that when listening to songs with fewer than 100 beats a minute – maybe about 1 beat per second – the cows gave 3% more milk: in the time the farmers normally got 100 cups from them, they now got an extra 3 cups. Even though people have been studying this since the 1930’s, no one’s sure whether music really makes cows make more milk – or more importantly, whether the milk tastes better.
So March 20 is pretty special, and not just because it’s the 79th day of the year. In most years March 20 is the start of spring, also called the vernal equinox. Equinox comes from the Latin words for “equal night,” because on this day Earth is tilted perfectly so every spot on the planet has 12 hours of both day and night. Because of that perfect tilt, people try to balance an egg on end at the exact moment of the equinox. Does that actually work? It does – because you can balance an egg any time! And, as noted in this week’s family activity on our Add It Up blog, eggs are also incredibly strong. While they break easily if they fall sideways onto the floor, they hold up surprisingly well when you press in on them. Take a couple of small plastic cups, stack your egg between them as shown here, and try balancing lots of heavy objects…you’ll find your egg can stand up to a lot.
Do Double-Stuf Oreos really have double the amount of “stuff” in the middle? One group decided to do an experiment to find out. Read on to see what they discovered – and do the Double-Stuf math!
Did you ever imagine making a humongous peanut butter cup? Find out how to do it here with a little creative math!
Do you like ketchup on your burger, fries, or hot dog? We’re loving this robot that squirts the ketchup for you. But it doesn’t seem to do the math right on the timing, making a big, ketchup-y mess. Read on to “mustard” up the math in this ketchup-squirting robot!
Have you ever tried eating a butterfly? Neither have we. But we’d definitely try one if it were made of chocolate like these ones are. Read on to see how they’re made, and make sure to do the math right, so none of your butterflies end up missing a wing!
Sure, you’ve probably eaten apples, bananas, and grapes. But have you ever tasted a jabuticaba? And if not, what does it even look like? Read on to discover the math in a list of 20 fruits you’ve probably never eaten – and see how many you might be adventurous enough to try!
Now this is silly: a dog eating at a table, using human hands! One man taught his dog Mariele this funny trick, and they put on shows for people. When you think about the practice this must have taken and all the food to practice it, the numbers really begin to wrack up. Read on to do the math about this fine-dining dog.
When you go to the post office, you can mail lots of different things just by putting them in a box and putting stamps on them. But at one post office in Hawaii, you can smack some stamps right on a coconut and send it to a friend – no box required! Read on to see how the postage and fun add up when you go nuts mailing coconuts.
It’s Valentine’s Day, when people all over America give each other flowers, balloons and chocolate to show that they love each other, even though we all actually love each other every day. They also give cards, and for kids who bring cards for their entire class at school, this becomes a pretty big project. You have to pick out a set of cards at the store or else make your own. Then you have to decide whether the boys and the girls all get the same kind of card, or should you give them different ones. Then there’s the matter of attaching a treat: should it be Hershey kisses, or pencils with hearts on them, or those candy hearts that say things like “I’m Yours”? If you like putting together Valentines, you can make this as complicated as you like…and if you do the math right, you’ll have a couple of treats left over for yourself.