1. Intervention Warm Up 11-1-16
National Young Readers Week is celebrated in November. Write about your favorite book. Include details that tell about the events from the story. What makes it so good?

2. Intervention Assignment
Book Study on Holes, read chapters 1-5 today and complete questions on lesson.

3. Intervention Closure 11-1-16
Do you think it’s true that digging holes can turn a bad person into a good one? What are some other unpleasant things you’ve heard about that are supposed to “build character”?

4. Homeroom Warm Up
Every four years, the people in America cast their vote for who should be the American President. Imagine you were voted president of your school What changes would you make and why?

5. Science Warm Up
Which statement accurately describes the process that forms a type of rock?
A. Metamorphic rock forms when igneous rocks are compacted at low temperatures.
B. Sedimentary rock forms when metamorphic rock melts.
C. Sedimentary rock forms when small pieces of rock are compacted and cemented.
D. Metamorphic rock forms when magma cools and crystallizes

6. BRING SCIENCE BOOKS TO CLASS TOMORROW!!!
Read Science textbook pages
BRING SCIENCE BOOKS TO CLASS TOMORROW!!!

7. GLE 0707.11.1 Identify six types of simple machines.

8. Machine – a tool that helps us do work
Machines help us by:
Changing the amount of force on an object.
Changing the direction of the force.

9. Using a Machine to do Work
Work you do on a machine is called work input (input force).
Work done by the machine on an object is called work output (output force).
Work=Force x Distance

10. Why Use a Machine?
Machines do not increase the amount of work done because the work output is never greater than the work input.
Machines allow force to be applied over a greater distance, which means that less force will be needed for the same amount of work.
So….same work, but less force!!!

11. Higher the MA=easier work
Mechanical Advantage
Some machines make work easier than others do because they can increase force more than other machines can.
Mechanical advantage is the number of times the machine multiplies force.
Higher the MA=easier work

12. Formula for Mechanical Advantage
MA= output force/input force
Example:
A grocer uses a handcart to lift a heavy stack of canned food. Suppose he applies an input force of 40 N to the handcart. The cart applies an output force of 320 N to the stack of canned food.
What is the MA of the cart?

13. Force is a push or pull that changes the motion or shape of an object.
Example: I push a bookshelf to move it.

14. Six Common Simple Machines
Lever
Pulley
Wheel & Axle
Wedge
Inclined Plane
Screw
Simple machines – have few or no moving parts

15. Example: seesaw, crowbar, baseball bat, rake
Lever –made of a board or bar set on top of a fulcrum. It is used to lift weight. Levers are used to apply a force to a load. There are three classes of levers, which are based on the placements of the fulcrum, the load, and the input force.
Example: seesaw, crowbar, baseball bat, rake

16. First Class Lever- a first-class lever, the fulcrum is between the input force and the load.
Common examples of first-class levers include crowbars, scissors, pliers, tin snips and seesaws.

17. Second Class Lever-The load of a second-class lever is between the fulcrum and the input force
Examples of second-class levers include nut crackers, wheel barrows, doors, and bottle openers.

18. Third Class Lever-The input force in a third-class lever is between the fulcrum and the load.
Examples of third-class levers include tweezers, arm hammers, and shovels.

19. Inclined Plan – a slanted surface to make lifting easier
Example: ramp, stairs

20. Example: knife, door wedge, ax
Wedge – two inclined planes together used to raise an object or split an object.
Example: knife, door wedge, ax

21. Example: drill bit, screws
Screw – an inclined plane wrapped around a pole or shaft that is used to hold materials together or drill holes.
Example: drill bit, screws

22. Example: steering wheel, doorknob, screwdriver
Wheel and Axle – a wheel that turns on a post to help move things quickly and easily
Example: steering wheel, doorknob, screwdriver

23. Example : flagpole, clothesline, cranes, fishing reel
Pulley – made of rope and string wound around a reel to change the direction of a force.
Example : flagpole, clothesline, cranes, fishing reel

24. Compound Machine – two or more simple machines working together.
Examples:
Bike
Car

25. Science Closure
A logger splits a piece of wood. What simple machine splits the wood?
A wedge
B wheel and axle
C pulley
D lever