Hello Students,
I hope you and your family are doing well. This weekend, my family did a lot of cleaning and organizing, went for a couple walks around the neighborhood, but otherwise kept to the house/backyard. I hope you and yours are self-isolating too, as having an exponential curve of ill people could lead to what Italy is experiencing now. From what I understand, the next week or two are critical, as the virus can take up to ten days to show symptoms, but those with it (and without symptoms) are contagious during that time. Basically, lots of people may look/feel fine, but be spreading the virus around. I believe this is why Mayor Garcetti has closed all bars/theaters/dine-in eating/gyms. If you have any questions, please feel free to reach out via email or Remind.
For your two week project, I shared with you the basics (make a machine, analyse it in writing) on Friday. In addition, I have a number of supportive assignments I'll be posting here on the website, as well as a template for the writing on Schoology. I intend to post most of the assignments for the two weeks by Wednesday of this week, so if you'd like to work ahead, that's fine. For today, there's a simple assignment on....simple machines. And for those who were absent Friday, there's Friday's exam. I'll reopen the exam by 10:30AM Monday morning - please make sure you take the exam by Tuesday 11:59pm. When taking the exam, you should use a calculator, scratch paper, pen. No notes. All the info you need (specific heats, equations) will be there listed with the problems.
Best,
Mr. Alexander
Essential Question: How can energy be transferred?
GOALS: SWBAT...
1. list the requirements for the Rube Goldberg project
2. Assess their current knowledge of simple machines
3. Define "machine", and the six types of simple machines
WARM-UP 119 (4 min)
1. After reviewing the project guidelines below, list three concepts you'll need to understand in order to be successful with this project
2. which component of the project am I valuing the most in assessing your learning (aka, in assigning your grade)
3. from the rubric, list two ways you can earn points (aka, show knowledge)
4. from the rubric, list two ways you can lose points (aka, show lack of knowledge)
Project guidelines link: https://docs.google.com/document/d/1NbvMBgjdU3HvjqoQVbV1dkhuEKZ3p5VnwZiVpAGwsKo/edit
CLASSWORK
1. 117A: Simple Machines Knowledge Inventory (15 minutes)
This is just like the knowledge inventory we did for Thermodynamics. We'll do the pre-learning now, and the post-learning at the end of the unit.
Make a four column organizer with the following columns (see below in ORANGE, or day 101 in your notes for an example)
This will take about 1-1.5 pages.
Number, copy, and answer the questions below in your organizer
Rank your current understanding of each concept, from 1 (low) to 10 (high)
Remember, don't look up the terms or questions for the knowledge inventory. We what to know what YOU know.
etc.....
QUESTIONS:
What is the purpose of a Machine?
For what are levers used?
How is the pulley at the top of a flag pole useful when raising a flag up the flag pole (what's a flagpole? Here are photos: LINK)
List five machines which use a wheel (Only two can be transportation-related).
Where would you find an axle?
What is the purpose of an axle?
Draw an inclined plane.
How are inclined planes helpful?
List two purposes of wedges.
How does a screw work?
What is work? (the physics definition, not a job)
What is an energy transformation?
Define Kinetic Energy
Define Potential Energy due to Gravity
Define Elastic Potential Energy.
117B: The Six Simple Machines (15 minutes)
Below, I've provided two links to informational pages on simple machines. Use both to improve your understanding of simple machines.
1. Define the term, "machine"
2. Create a graphic organizer like the one below. Use it to define each of the six simple machines
Great definitions of five of the six simple machines. https://www.explainthatstuff.com/toolsmachines.html
Good for examples and alternate definitions of machines. Includes a good definition of 'inclined plane' that isn't in the first link. video: https://sciencetrek.org/sciencetrek/topics/simple_machines/index.cfm
text: https://sciencetrek.org/sciencetrek/topics/simple_machines/facts.cfm
Essential Question: How can energy be transferred?
GOALS: SWBAT...
1. list four rules for knife safety
2. Assess their current knowledge of simple machines
3. Define "machine", and the six types of simple machines
4. Compare and Contrast the three classes of levers
WARM-UP
1. What kind of simple machine is a knife?
2. List four knife safety rules.
CLASSWORK
Notes:
In order to 1) build your Rube Goldberg Machine, and 2) test it, you'll need to go through the knowledge building process, and the design process. Knowledge building is what you did on Friday, and will continue today. Depending on where you are progress-wise, you may start your design today, or Tuesday.
There are some samples of materials on the demo table in the front of the class. Feel free to come up and take a look at what I have. Also, you can bring materials from home, either just for your group, or to share (or both).
1. 119A: Knife Safety Notes
2. 119B: 6 Simple Machines & 3 Classes of Levers Notes
Great definitions of five of the six simple machines. https://www.explainthatstuff.com/toolsmachines.html
Good for examples and alternate definitions of machines. Includes a good definition of 'inclined plane' that isn't in the first
link: http://idahoptv.org/sciencetrek/topics/simple_machines/facts.cfm
Even more definitions: https://www.school-for-champions.com/machines/levers_classess.htm#.XJAOQuHYrnF
3. 119C: Work Time
LEARNING AT HOME
1. Quiz on 6 simple machines this Wednesday
2. Complete any portions of Day 117, 118, or 119 that are unfinished. Those steps are your checklist to begin building
EXTRA CREDIT OPPORTUNITY:
Want some? Our Rube Goldberg project is materials heavy, so, if you'd like to donate some common materials to class, I will reward your support with points.
Things which are larger, or more expensive (boxes, glue sticks, springs) will get more points per item than something small and cheap (one used Hot Wheels car, for example)
Here's what we need, preferably on Monday (03/18/19) or Tuesday (03/19/19). Keep in mind that this is a live list - I'll take things off the list if we have enough of that material. Also, if you think of something, and are wondering if it might be useful, just ask in class or via the Remind App:
Moving size (approx 18x12x12" or larger) boxes. Used in good condition is great.
popsicle sticks (new, not used - thanks)
springs
hot glue sticks (like these: https://www.amazon.com/Diameter-Compatible-Industrial-Adhesion-Quickly/dp/B07GTJ88KT/ref=sr_1_7?keywords=hot+glue+sticks&qid=1552582849&s=gateway&sr=8-7)
used matchbox size cars/trucks that roll well (they can be beat up cosmetically)
tubes (from toilet paper or paper towel)
gear sets and or motors (like these: LINK)
string/yarn/string
marbles
binder clips
CD's (used is fine)
screws
small nails
masking tape (brown or blue)
Unit Schedule
Mon: Background knowledge.
Tue: knife safety, (what kind of simple machine is a knife?)
simple machine lecture
Bring materials for your group, or for the class (extra credit if it's for the class)
Design time
Wed: Simple Machine Quiz
Design time/building time
Thurs: Design, Building, & Testing
Fri: Paper guidelines
Building & Testing & Paper writing
Mon: Building & Testing & Paper.
You can do your final run of your machine (for a grade) starting this day
Tues: Last day to do your final run, for a grade
Paper due by 11:59pm
Wed: Exam. Intro to next unit