Mrs. Gemmell, 12/20

At the beginning of the week, students connected all their DNA strands to create a 7^th grade DNA sequence.  This stand will be on display in the 7^th grade science room for the rest of the year!  From here, students took their first step into genetics.  We discussed what we already know about our traits and where they came from.  Additionally, students began to learn about the Father of Genetics, Gregor Mendel and his pea plants. 

On Thursday, students were given an optional extra credit for over the break.  You can find the directions on the 7^th grade filing cabinet.  This extra credit is worth up to 10 points! Students are able to choose an article about science from the news and create a summary and reflection on it.  Students can choose up to 2 article reflections to complete.

Once we get back from break, students will get right back into genetics with some in class simulations and discovery.  I hope everyone has a nice and relaxing break!

12/13

Students have had an exciting week while learning about DNA and Genetics.  We are beginning to understand how tiny these stings of molecules really are, yet so detailed in their nature.  We also discovered that DNA unites all living organisms!

Earlier this week, students started to build their own strand of DNA (a gene).  All the strands of DNA will be complete by Monday so we can combine and assemble the 7th grade DNA ladder.

On Wednesday, students partook in a DNA isolation and extraction lab where they were able to look at actual DNA from a split pea.  We broke the cell wall, nucleus and other proteins away from the DNA in order to see the tiny strands clearly in test tubes.  I was really impressed with how well the students did in this lab.  They were really able to see quite a bit of DNA.  

12/6

This week students completed their Mitosis Observation Lab.  Here students were able to visualize the various stages of the cell cycle by viewing onion root cells under the microscope.  While completing the observation lab, 7th graders were learning the details regarding each stage of mitosis.
On Thursday, students finished up the Cell Process Unit with a test.  Students took their test on computers and will be able to get their scores early next week.
Today students dove right into the next unit, DNA and Genetics.  I am combining two chapters (Chapter 5 and 6) in this unit, as they relate so closely with one another.