Category Archives: Uncategorized

Matter, Atomic Structure, and Bonding: Electroplating Metals

For today’s lesson, we decided to deviate from Lesson 27 in the textbook because of reagent availability and safety concerns.  We began class with a brief video demonstrating the process of electroplating copper metal with zinc metal:

After the video we sketched out the lab setup:

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The students then watched a live demonstration before they set up the lab working in groups of four.  Because the electroplating takes an hour or so to be clearly observable, the experiments continued to run until 4th period as pictured below along with a picture of the copper we started with:

After setting up the experiments, students watched a video about how electroplating is used in industry:

Matter, Atomic Structure, and Bonding: Bonding

The Lesson 26 PowerPoint introduced students to the four models of chemical bonding.  Students also received a handout of the models with additional information.  After the PowerPoint, students worked in pairs to organize the Substance Cards and recorded their learning on the Lesson 26 worksheet (one per student pair).

Note: worksheet question #8 asked students about elemental substances.  We did not have time at the end of class to explore the topic, so we will discuss briefly tomorrow during class.  Examples of elemental substances are molecular oxygen (O2) and molecular hydrogen (H2), both of which consist of two covalently bound atoms of the same element.  An elemental substances consists of two or more atoms of the same element.

Energy, Matter, and Organization: Why Can’t You Hold Your Breath Forever?

We are giving Google Classroom a try for the first time in Biology class.  After clicking the link, students should enter the class code written on the white board, which will grant them access to the “classroom” automatically in the future.  Once there, students should access the Biology classroom and select the “Why Can’t You Hold Your Breath Forever” assignment.  The assignment consists of four pages of reading from the textbook, followed by a Google Doc worksheet.  After “turning in” the worksheet, the remainder of the class period can be used to review the ocean acidification content linked to yesterday’s post.

Energy, Matter, and Organization: Stepping Up the Pace

Last week, students were introduced to body systems.  They watched a video showing how the human body reacts under extreme conditions, and then researched body systems involved in the scenarios they saw in the video.  This week, we began with a reading from the class textbook.  The reading introduces students to the concept of homeostasis and feedback loops, while introducing those feedback loops in the context of specific body systems.  Students read page 177, and then pages 229-236, answering questions 2a-d on page 178.  Students finishing early also answered question 3, and then were challenged with searching for the mechanism behind the cycle they wrote about in question 2d.  The directions were also written on the white board and are shown below:

Matter, Atomic Structure, and Bonding: Mass and Volume

We began class with a brief review of key vocabulary and concepts introduced in Lesson 3 (matter and energy) and then moved on to the Lesson 4 PowerPoint.  Students reviewed the concepts of mass and volume and then received the Lesson 4 worksheet and a reminder that tonight’s homework includes reading Lesson 4 and answering questions 1-11 on page 16 of the textbook.  Students were then provided with the remainder of the class period to complete the lab outlined in the Lesson 4 worksheet.  Unfortunately, the class period concluded abruptly with our first practice fire drill of the school year.  We will complete the lab at the beginning of class tomorrow.  Thanks again for doing such a fantastic job evacuating the building for the fire drill and for behaving appropriately while waiting for the all-clear.  I continue to be extraordinarily impressed with the level of maturity and leadership my chemistry students exhibit on a daily basis.

Matter, Atomic Structure, and Bonding: Defining Matter

For today’s lesson, students learned how to classify items as matter or not-matter given the following definition of matter as anything that has mass and volume.  We reviewed the Lesson 3 PowerPoint and worked through question 1 of the Lesson 3 worksheet as a class.  Students then had time to finish the worksheet and answer questions 1-6 from page 12 of the textbook.  We concluded with students reading an article titled “What is Chemistry?” and answering the following writing prompt: If you had to pick a career right now, what would you choose?  How is chemistry part of that career?

Cells & Homeostasis: Systems Quiz

In Biology class, students took their first Friday quiz of the school year today.  The quiz included 10 questions covering systems and networks, as well as the Pirate Way values and a quick check-in on how the year is going so far in class.  Students were also reminded to check Illuminate to ensure they had received credit for turning in their signed Safety Contract and Student Questionnaire.  With schedule changes winding down, we will kick it into high gear next week with our study of cells.  Have a great weekend!

Cells & Homeostasis: Social Networking

For our entry task today, students were tasked with constructing a network diagram of the schools they have attended, finishing with Highline High School.  The activity served as a team-building exercise (we created a big class network diagram) and helped review key vocabulary introduced yesterday (system, network, node, and edge).  Students then used their network diagrams from yesterday’s meet-and-greet activity to create a class social network using a ball of purple and gold “Pirate” yarn.  Each student served as a node, and they had to say the name of the student they were tossing the yarn to along with what they shared in common.  By the end of the activity, the students were criss-crossed in yarn, practiced each other’s names, used data collected yesterday, and had a clear visual understanding of a network.  We wrapped up by watching (or finisihing) Aaron Kobelin’s TED Talk posted yesterday.  Students learned that science is a highly collaborative venture, with scientists often working on part of a larger puzzle without actually knowing what the larger puzzle looks like.

We will have a quiz tomorrow – study up!

Cells & Homeostasis: Lab-Grown Clothing

We started class with a YouTube clip of Jimmy Fallon and Kevin Delaney releasing energy in candy, making elephant toothpaste, and using smoke to visual air bursts coming from an air cannon:

Next, students completed a questionnaire to better introduce themselves and to provide me with data for the WABS Teacher Externship program I am participating in this year.  Students turned in the completed questionnaire, along with the signed syllabus.  They also received a folder, wrote their name on it, and placed it in the file cabinet.  The folder will help students stay organized throughout the school year and provides students with ready-made organizational strategy for keeping track of classwork.  We finished the day with a “popcorn-style” class reading, where each student read a paragraph of an article and then got to pick the next reader.  We read an article about lab-grown clothing, where scientist Suzanne Lee is using bacteria to create fabric.

Find out more by watching Suzanne Lee’s TED Talk: