Simple & Compound Machines
WEDGES, LEVERS, PULLEYS,
INCLINED PLANE, WHEEL/AXLE, & SCREWS
Essential Questions:
What is work?
How do simple machines make work easier?
Where do you find simple machines in your environment?
How does friction effect motion?
How do simple machines combine (compound) to make work easier?
What is mechanical advantage?
Career Connections:
Mechanical Engineer
Analyst
Researcher
Physics Teacher
Presentation & Notes
Take good notes!
Worksheet Practice and Notecatcher
Using your notes and the links below, fill out the Simple Machines worksheet.
Online Links that may help:
http://teacher.scholastic.com/dirtrep/Simple/invest.htm
http://www.enchantedlearning.com/physics/machines/Levers.shtml
http://www.the-office.com/summerlift/pulleybasics.htm
http://teacher.scholastic.com/dirtrep/simple/invest.htm
http://www.beaconlearningcenter.com/WebLessons/SimpleMachines/machines004.htm
http://tech.txdi.org/simplemachines
http://www.mikids.com/Smachines.htm
*DUE end of class on Tuesday*
Practice: Simple Machines
Homework Due @ Start of Class
Simple and Compound Machine Practice with
K*Nex
We have reviewed a lot about simple machines... Now it is time to make our own!
You have the rest of class to design a compound machine that combines at least 3 simple machines. It must serve a specific purpose (in basket), and you must submit a mini-plan (in notebook) before moving into the tool lab for construction.
Steps:
1. Pre-Plan- read the "Snoots" problem sheet in the eng 2 basket.
You will need to combine 3 simple machines to create a K*Nex compound machine that serves a real life purpose. You will need to use the internet.
Some simple machine ideas HERE.
In your notebooks, sketch out your idea with all simple machines labelled.
Then, create a FULL LIST of all the pieces you will need to make this machine.
(ie. 20 red pieces, 4 yellow pieces, 2 large green gear wheels, etc.)
Beneath your sketch and list, write a short explaination of the function of the machine in real world terms. How is it going to solve the problem?
2. Bring your sheet over to the teacher for a sign off.
You will need to be able to explain all the moving parts of your design, as well as its purpose.
You will recieve a gallon-sized bag to collect your pieces.
3. Collect your K*Nex pieces and begin construction.
You will have through the end of class (and possibly 3/4 of next class) to complete your design.
When it is time for clean up, return any loose pieces to your bag with your mini-plan sheet.
Take your bag and K*Nex machine to the tan student cabinet by the machine counter for storage.
4. Present your plan to the class.