Petchup or Muttstardt?

As you probably know, we were thrilled to be able to announce to all of our followers that our favorite musher Monica Zappa had gotten a new sponsor:  Petchup.  LINK

So my kids were really intrigued by the whole idea of ketchup and mustard for dogs.  We knew that Monica was experimenting to find out the best way to feed it to her dogs, so we decided to do our own experiment.

Monica told us that she was experimenting to find the best way to use the product with the dogs both in the kennel and on the trail.  At the kennel, she could just mix some with the dogs’ food and they slurped it right up!  On the trail, things may get a bit more complicated.  She is playing with adding it to water in warm races, putting it on the dogs’ kibble, squirting it directly into their mouths, and even making Petchup ice cube pops as a treat.  Monica feels like the product is having a positive impact on her dogs’ energy and overall health.  We were anxious to see if we could add anything to her discoveries.

DSC_0205So first, we needed a subject for our experiment.  Enter Atti, our service dog in training.  Our math and science teacher, Ellen Rizzuto, is training a service dog with the help of our Lower School.  Atti gets used to being around a lot of people and activity and our boys learn how to handle a dog that is working and isn’t to be treated like a pet.

We wanted to see if Atti would prefer Petchup or Muttstard and if she would prefer it alone or on her kibble.

We let the boys smell the two products – the Muttstard is turkey flavored and the Petchup is beef flavored. They made their predictions about which one they thought Atti would prefer.  We put a little of each product in a bowl, showed Atti where they both were, let her smell them both and then let her go…. She chose the Muttstard first and totally devoured it!  She also then devoured the Petchup, so she liked them both, but we think she preferred the Muttstard.  For the second experiment we put a bowl of plain kibble, a bowl of kibble with Muttstard, and a bowl of plain Muttstard out for her to select.  We think the first time she just went to the bowl that was the closest, so we reset it up so the bowls were closer together.  This time she chose the kibble with Muttstard first.  She did eat them all again, but we think her preference was kibble with Muttstard.  So, our recommendation to Monica is to carry Muttstard and squirt some on the dog’s food and they should love it, just like Atti did!

It actually turned out to lead to a very interesting discussion about the fairness of the experiment and how certain we could be of our results. Plus – it’s fun anytime Atti visits us!

More on the Weather

The weather continues to be the big story as we prepare for this year’s Iditarod.  It seems like the world has turned upside down… at least it looks that way on our weather graph!  The line tracking the temperatures in Baltimore keeps dropping down below the lines tracking the Alaska weather!

My students have been learning about Heat Energy with Mrs. Olgeirson, the science teacher, and they invited me in one day as they explored how heat energy affects our bodies.  More specifically, they were looking at how cold affects the rest of your body.  The boys were easily able to make the tie in to the Iditarod and the frigid temperatures the mushers will face (well, we HOPE they will face).

????????The first experiment they did was about how cold affects extremities.  When your toes or fingers get cold, they send a message to your brain to pump more blood to that area.  To test this, the kids wrote their name on a sheet of paper.  They then plunged their hand into a bowl of icy water (about 31 degrees Fahrenheit) for sixty seconds and then tried to rewrite their name.  Their hypothesis that their signatures would be different proved to be very true!  The boys were really surprised about just how hard it was to hold the pencil and write their name when their hand was so cold.  Imagine the mushers who have to care for their dogs’ feet and all their other chores that can’t quite work with gloves on!

The boys wondered how the mushers warm their hands up, and Mrs. Olgeirson pointed out that when your hands and fingers are cold, you should move your fingers and not rub them together.  The friction caused by rubbing your hands together could actually create heat energy that could burn your skin tissue!

How else to keep warm in on the Iditarod Trail?  Well, animals have blubber or fat to help them stay warm, and people wear clothing.  The boys were interested to hear that the clothing doesn’t actually make you warm; it insulates you from the cold.

The students then got a chance to try out the idea of “insulating” their hands from the icy water.  Mrs. Olgeirson created a “blubber mitten” by coating one plastic bag with Crisco and putting it inside a second bag.  The student could then insert their hand into the baggie and plunge it into the ice bath.  The temperature of the ice bath was 28⁰F, but the temperature inside the “blubber mitten” was 60⁰F!

The boys really got the idea about how cold weather can affect our bodies through these easy, but effective experiments!  A special thanks to Mrs. Olgeirson for hitting the trail with science and for sharing her assignment sheet with you!  BLUBBER EXPERIMENT WORKSHEET

Just How Cold is it in Maryland?

Well – at one point yesterday it was colder in Oakland, Maryland than the South2014-01-07 06.21.02 Pole!   At one point it was – 15⁰ in Western Maryland and -7⁰ at the South Pole!

In Baltimore, we didn’t get quite as cold as the South Pole, but we did beat Alaska! For the first time, on our weather graph, the Baltimore line dropped below the lines for Anchorage, Galena, and Nome!

Yesterday’s Temperatures: 

Baltimore:  18⁰ F / 10⁰ F

Anchorage:  27⁰ F/ 18⁰F

Galena:  25⁰ F / 18⁰ F

Nome:  34⁰ F/ 27⁰ F

So, with this historic Polar Vortex hovering overhead, we put our regularly planned lessons on hold and did some “Just How Cold IS Baltimore?” activities and then related them to travel on the Iditarod Trail.

2014-01-07 09.43.58We started off by putting thermometers outside our back door, so we could see just what kind of temperatures we were dealing with.  The thermometer we put on the playground in the shade showed -8⁰ F and the thermometer in the sun showed about 6⁰ F.  The boys were surprised that being in the sun would make that much difference!  We put cups full of water in the same two locations and then checked on them periodically during the day.  The boys originally predicted that the water in the cups would freeze in less than fifteen minutes.  They were surprised when it took the cup in the shade about an hour and a half to freeze solid!  The cup in the sun looked like it was finally frozen at the end of the day, but when we popped the ice out, it turned out that it was only frozen around the edges!  The whole center was still liquid!  We talked about how one thing the Iditarod mushers have to be careful of is making sure they have enough water to drink on the trail.  It’s one of those things you don’t really think about, because usually you think about needing to drink water when you are hot… not when you are cold.  Mushers have to get creative in finding a solution to keeping unfrozen water accessible for their journey.

We also set up an experiment about wind chill.  We set up a tray of water and measured the temperature of the water to be 50⁰ F.  We set up a fan to blow across the top of the water and watched to see what would happen. We were shocked when the temperature dropped 10 degrees in just 2 minutes!  It kept dropping and dropping, until it got down to 32⁰ F about fifteen minutes into the experiment.  The most surprising part?  We let the fan run for the entire rest of the day and the water temperature never got lower than 32⁰ F!  It was a great chance to talk about other factors that came into play and why the water wasn’t freezing even though the temperature said it should be!  We were able to relate this to the Iditarod by talking about the gear the mushers wear and they need to dress for not only warmth, but to be wind proof as well!

But, but far, the biggest hit of the day was the soaking wet sweatshirt!  We took a2014-01-07 09.43.47 sweatshirt and got it soaking wet and then hung it on a hangar in a tree outside our window.  The immediate result was that steam rose off the shirt like crazy!  Then the icicles started to form on the bottom of hem.  We brought it in every five minutes at first to see how hard it was getting and after we decided it was officially “stiff as a board” we just let it sit outside until the end of the day.  The boys were dying to drop it onto the floor.  Half of them thought it was going to shatter and ruin the shirt, the other half thought nothing would happen at all.  So, just before dismissal, we brought it in and climbed up on the table to drop it to the floor.  I wish I had gotten a video!  We dropped it and it landed on the floor standing up on the bottom hem perfectly upright!  It didn’t fall over, it didn’t shatter, it just stood there like a frozen soldier!   It was so funny and their expressions were priceless!  Now they are anxious to see if it the sweatshirt will return to its’ natural soft and cozy state by tomorrow morning.  We tied this into the idea that mushers do NOT want to wear cotton!  They were able to see quite obviously the trouble a musher would get into if they were to run into overflow or water while wearing cotton clothing!

We just did a simple scientific method form for the experiments.  They recorded the question, hypothesis, observations, and then made a conclusion.  It was just a spur of the moment type of day, but it was a whole lot of fun!