Dichotomous Keys {Featured on The Science Penguin}

My blog post about dichotomous keys was featured on The Science Penguin's blog post about great science ideas.  

It is truly one of my most favorite units to teach, so I am thrilled that it is being used and shared.  Check it out!  Whoop whoop!

            

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Animal Live Cams: Baby Eagles!!

Kids l.o.v.e. animals, which makes my classification unit a peach to teach.  All you do is pop up a picture of some random animal and suddenly they are all spewing random facts about it in your direction.  It's the easiest topic to get them interested in!  

I mean...right?  Just watch this elephant learn to use it's trunk...

When it comes to the Animal Kingdom, I get to teach the {dichotomous key}, vertebrates, and invertebrates.  Our dichotomous key and invertebrates sections have the most new information for fourth graders, so I enjoy those the most.  Plus invertebrates have fun words like cnidarians and echinoderms.

There's nothing better than just observing animals in their natural (or zoo-natural) habitats.  We love to pop in and check up on what they are doing.  Sometimes observing is learning!  Especially in science.  Here are some of our favorite Animal Cams.

Open Sea Cam from Monterey Bay Aquarium:

Live streaming video by Ustream

We loved watching the open sea cam and spotting sharks as they swam by.  We also enjoyed the {other animal cams that the Monerey Bay Aquarium had up}- particularly the penguins.

Typically, we check out the eagles in Decorah, Iowa.  A couple years ago they had eggs that hatched while we were watching and it was the coolest thing!

Eagles in Decorah, Iowa

Live streaming video by Ustream

In doing my research on this, I realized that there are eagle eggs hatching in Pittsburgh RIGHT NOW.  I couldn't get it to upload on my site, so you'll have to go there yourself.  I can't stop watching; it is so amazing!  Right now there is one baby and two eggs.  My students are going to be so thrilled!  I hope the last two eggs wait until at least Monday to hatch...

Here are some other great animal live cams:

{San Diego Zoo Animal Cams}

{Open Oceans Global Complete Animal Cam Website}

{National Geographic for Kids Animal Live Cams}

{USTREAM Animals}

Stop by later this week for some more on ideas for teaching invertebrates.

Happy Teaching!

The Dichotomous Key

This year is the first year I won't be the science teacher for fourth grade at our school because we switched to self-contained classrooms.  I may have said that before on here...  For someone who was never a science buff growing up, I have come to adore teaching the subject in school.  So in light of that, I'm sharing one of my favorite science units/lessons for fourth grade:  Classification: the dichotomous key.

Truth: I never knew what a dichotomous key was until I had to teach it.

When I read that part of my curriculum I immediately went to my trusty friend Google (I'm kind of a Bing girl now, but I still call it "Googling") and scrounged up every age appropriate activity and lesson I could find.  Basically, no matter which search engine you use, I have probably done every lesson it brings up.

We classified everything in sight:  shoes, buttons, monsters, jelly beans, etc.  We continued to classify until every object had it's own category.  Here are a few of our finished products:

Classifying Buttons!  We focused on using the "this/not this" format- for instance, small/not small.  It was a really hard concept for us to wrap our minds around (as seen in the following picture...small/large would not be an accurate way to set up our dichotomous key- but she caught on after that!).  

Classifying Monsters!  We did this as a class- their homework assignment was to color a monster using only yellow, red, green, and purple.  I did that just for the sake of making it easier to classify as a class.  Then we made a giant dichotomous key on the board and they each got to give a "scientific name" to their monster once he was classified to his own species.  

Flipping back through my NSTA Science & Children magazines, I ran across a great article using Jelly Belly jelly beans.  Ok, I know this isn't news in the science teaching world, but we do it every year now and it is always a hit!  Here is the article and links to the dichotomous key to use.  I don't use the "Harry Potter" version for a few reasons- one being that they are a little tricky to find now.

Students work in pairs to use their dichotomous key.  I give each pair of students 10 jelly beans.

They use copies of the NSTA dichotomous key (pink) and then fill out their key "route" to decide each jelly bean flavor.  They taste it to "confirm" that they are correct...sometimes they are not so pleasantly surprised!  

I have them draw a picture of what the jelly bean looked like next to their guess.  Click on the picture of the page for this dichotomous key freebie at my TpT store:

That's all for today!  I'm working on being better at this blog business, but for now I'm off to plan guided reading lessons for the week... a teacher's work is seriously never done!

            

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