Gretchen Brinza
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What Affected the Trout Population?  Explaining the Mystery...

6/13/2017

 
With all the presentations complete, ALL groups claimed that both abiotic and biotic factors affected the trout population from the 1930s-2000s.  Students used quantitative and qualitative evidence to back up their claims.  Check out each of the group's presentations!  Way to go 6th grade!  I will certainly miss you next year!

Group #1

This group did a "talk show!"

Group #2

This group did a presentation...
Along with a song that was rewritten to the tune of Justin Beiber's "Baby!"

Group #3

This group did a presentation and sang some songs, too.  We don't have the songs digitally, though.

Group #5

This group rewrote the lyrics to Maroon 5's "Sugar" and the .pdf below was set to move at each beat in the song!

Group #7

And this group did a musical script! (many songs in one)!

Group #4

We had students become a "Magic School Bus" rendition here, making a play with Ms. Frizzle!

Group #6

And here we have a presentation along with some slides that show all the evidence (with the help of Google Drawings making it more clear)!
Picture

Group #8

This group used Google Drawings and Google Slides to explain the trout mystery!

Group #9

And last but not least, we've got a movie!

Trout Word Clouds!

6/13/2017

 
And while the presentations roll in, we did another technology challenge to summarize our learning!  We made some word clouds that accentuate key scientific vocabulary from our life science unit!

Life Science Memes

6/13/2017

 
As we wait for our presentations to be finished regarding what affected the trout population, sixth graders were challenged to make a meme on one of the following themes as they relate to our Life Science Unit.  Students were to make a meme on one of the following:

​Table 1: Predator/prey relationship
Table 2: Competition
Table 3: Stable populations
Table 4: Food Webs
Table 5: Structure/function 
Table 6: Abiotic factors
Table 7: Bioaccumulation

Bioacumulation and Dioxin...YIKES!

6/7/2017

 
Picture
Something's a little fishy here...

We are pretty much in agreement that the sea lamprey's invasion into the Great Lakes explains the decline in the trout population starting in 1945, but what we aren't so sure about what the rapid decline of the sea lamprey in 1960.  What's causing this decline?  Is it a biotic factor like food supply?  Or can it be abiotic, like pollution?

We learned a bit about a chemical called dioxin and its effects on a food we through bioaccumulation.  Here is some data Mrs. Brinza got her hands on...
Picture
We started to put two and two together that the dioxin had an impact fairly deep.  Our understanding of bioaccumulation would also help explain why the sea lamprey, who as an invasive without any predators, would end up with the most dioxin in its body, and therefore, see the greatest dip in its population.

​As this student's meme points out...
Picture
All this makes us wonder though...what happened to keep the sea lamprey population so low and the trout population rebound in the 1980s?  Was this when lampricide was introduced and a limit to the production of dioxin as a waste product? 

​Check out this website which gives great information on the usage of lampricides!

Claiming What the Invader Eats!

6/1/2017

 
Using the computer model to simulate an invasive and the effects that its arrival has on a stable ecosystem, students determined what an invader ate.  They used the graphs and the data to see how populations of organisms fluctuated over time and how competition between organisms affected population size, too!

Students then took to Google Drawing to make their evidence that much clearer to the reader.  Check out the three examples of the evidence they collected above.  Way to go sixth grade!

    Lake Michigan

    I love that this unit hits so close to home with the Great Lakes!

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