December 12th

Warm Up:

General formula: MA = output force

                                      input force

Or ratio: MAlever = length of input arm

                               length of output arm

A lever used to lift a heavy box has an input arm of 4 meters and an output arm of 0.8 meters. What is the mechanical advantage of the lever?

Quick Reviews completed today:

A. Page 214 - Calculating Power (1-2)

B. Page 215 - Section Review Questions (1-9)

C. Circle Map: Explain the concept machines and provide examples

Homework: Complete simple machine notes on BLOG

Simple Machines Project given: Due December 20th

SIMPLE MACHINES CHOICE BOARD PROJECT

Create Create a game that requires the players to identify the six types of simple machines.	Design Design an experiment for one type of simple machine and have one of your classmates perform it.	Decide Visit Edheads.org and complete the activities recording the type of simple machine you decide is represented.
Construct Construct a Rube Goldberg device using at least 4 different types of simple machines and at least 12 steps.	Draw Draw an example of each of the three lever classes.  Label the effort, resistance and fulcrum on each lever.  Tell how each type of lever is used.	Invent Invent a compound machine that contains at least three simple machines.
Explain Explain how each type of simple machine makes a job easier.  Use specific examples for each type of simple machine.	Solve Solve the mechanical advantage problems for the different types of simple machines.	Classify Use the simple machine cards and classify them into the six types of simple machines.