Week 21

Monday, February 3, 2020 (HS-LS3-1): We took notes on the structure of genes, including a review of how chromosomes are found in the nucleus of cells, how chromosomes consist of DNA coiled around histone proteins, and how genes consist of regulatory regions, exons, and introns.

Biology 200203 Picture

Class concluded with the Crash Course video about heredity (below).  We paused strategically to capture important vocabulary terms (diploid, haploid, somatic cells, gametes) which were added to our vocabulary list from Friday.


Tuesday, February 4, 2020 (HS-LS3-2): To begin class, we watched the Amoeba Sisters video about meiosis (below) and students worked through a guided worksheet.

After the video, students had the remainder of class to read pages 52-59 of Inside the Cell to help them complete the Amoeba Sisters worksheet and to investigate the processes of independent assortment and crossing over.  Students answered the “Got It?” questions on page 59 of the book in their lab notebooks.

To demonstrate evidence of understanding, students were tasked with creating a stop-motion claymation video or Google Slides explaining the processes of independent assortment and crossing over (shared with the teacher).


Wednesday, February 5, 2020: Today is a continuation of yesterday.  Completed videos or slides depicting independent assortment and crossing over are due today.  Students who finish early should begin working on the One Trait Mouse Genetics Gizmo.


Thursday, February 6, 2020: As we enter the final week of Unit 5: Inheritance and Meiosis, we turn our attention toward the process of reproduction.  Class begins with a video which explains the process of human fertilization.  After a brief class discussion about what was learned and what questions remain, students were assigned a reading from the textbook along with the questions below:

In the BSCS textbook, read “Making More People” (p.477-481)

  1. How many ova are found in the ovaries of a newborn baby?
  2. How many ova mature into healthy ova?
  3. Where and when do ova begin maturing?
  4. Where are mature ova fertilized by sperm?
  5. Where are sperm formed?
  6. How long does it take an individual sperm to develop?
  7. How do sperm obtain the energy to swim through the female reproductive tract?
  8. How and why does the male body regulate testicle temperature?
  9. Explain the difference between a zygote, an embryo, and a fetus.
  10. What determines when a woman is ready to begin labor?

Friday, February 7, 2020: Class will begin with a short quiz focusing on:

  • Punnett Square vocabulary
  • Mitosis and meiosis: similarities and differences

After the quiz, students will have the remainder of the class period to complete and turn in any remaining work from this week.  Students who finish early should work on the single-trait Punnett Square Gizmo handed out last Friday.

Gas Laws Simulation

Monday, February 3: Last week, students were introduced to four different gas laws: Avogadro’s Law, Boyle’s Law, Charles’ Law, and Gay-Lussac’s Law.  We conducted a lab using marbles to determine the effect of volume, temperature, and “molecule” number on pressure.  We also practiced solving problems using Boyle’s Law and learned more about the variables of pressure and volume.

For our work today, students will complete guided notes focusing on Boyle’s, Charles’, and Gay-Lussac’s Laws.  We will also focus in on the variable of temperature, differentiating between Fahrenheit, Celsius, and Kelvin.  Students also received an Exit Task designed to illustrate the process and expectations for solving a gas laws type of story problem.

Notes from class:

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Keep Learning!

Want to know more about Absolute Zero and the Kelvin Scale?  Check out the selection of videos below and expand your mind:


Tuesday, February 4: We will complete our in-depth look at the math and thinking behind Boyle’s, Charles’, and Gay-Lussac’s Laws by completing the notes handed out yesterday.  Students will then begin working through the Gas Laws Simulation and accompanying guided work packet (AACT resource – provided by Mr. Swart).

Students interested in pursuing the Honors Option this semester also received an optional Gases Poster assignment that will be due February 28 and which will be presented to the class that day.  Students may work alone or with a partner.

Class Notes:


Wednesday, February 5: All 10th grade students are out of the building on a career-day field trip.  Non-10th grade students will have the class period to work on the Gas Laws Simulation.


Thursday, February 6: Students will have the entire class period as a work day to complete the Gas Laws Simulation. Students will also receive back their Exit Task from Monday to use as a study tool for the quiz tomorrow. The answer key is provided below:

Note: The quiz tomorrow will include questions about the Gas Laws learned thus far, and will also include math problems that require the sort of algebra reviewed in Monday’s entry task.  Students may use the guided notes from Monday/Tuesday on the quiz.