1. LEVERS
Levers are simple machines. They are used to do work with the least amount of effort.
There are many objects we use daily that are levers.
In this presentation, the students of the second year show to us some examples of them.

2. It is a first class lever
Crane
Load
Effort
It is a first class lever
Fulcrum
A crane is a machine used for elevating things and distribute loads suspended on a hook
Alejandro González Martínez

3. It’s a third class lever.
FORK
It’s a third class lever.
EFFORT
FULCRUM
LOAD
A fork is used to eat.
SERGIO ALLER / 2ªA

4. FISHING ROD Ii is a third class lever.
LOAD
Ii is a third class lever.
EFFORT
FULCRUM
The fishing rod is used for catching fishes on the water.
Mar González Martín

5. It is a third class lever.
Human arm
It is a third class lever.
The effort is in the middle.
The load is at the end of the arm.
The fulcrum is at the end of the arm.
Iván Llaneza

6. CROWBAR Effort A crowbar is a first class lever.
It is used for moving heavy objects from one place to another.
Fulcrum
Load
Mar González

7. It´s used to move material from one place to another with less effort.
WHEELBARROW
LOAD
EFFORT
It´s a second class lever
It´s used to move material from one place to another with less effort.
FULCRUM
Sara Sampedro Castro

8. Víctor Fernández López
SCISSORS
FIRST CLASS LEVER
LOAD
It´s used to cut things with less effort.
It´s made of steel and plastic.It´s triangular.
FULCRUM .
EFFORT
Víctor Fernández López

9. SEESAW It’s used to play; when a child is up, the other child is down.
EFFORT
LOAD
Celia Majano 2ºA
It’s used to play; when a child is up, the other child is down.
FULCRUM
The seesaw it’s a first class lever.

10. A stapler is used to hold several papers together.
EFFORT
It’s a third class lever.
FULCRUM
A stapler is used to hold several papers together.
LOAD
Celia Majano 2º ESO A

11. SPRINGBOARD Load Effort Fulcrum A springboard is a second class lever.
The springboard is usually used for jumping, and doing some acrobaties.
Fulcrum
Load
Martín Suárez Molina

12. SHOVEL It’s is a second class lever
Fulcrum
Effort
Load
It’s is a second class lever
This tool is very useful for doing works in contructions, for example workers can use it for doing cement or for put it on a wheelbarrow.

13. Clothes peg
EFFORT
LOAD
When you are looking for a lever in a clothes peg, you can find two types: the first and the third class lever.
The clothes peg has a very simple use; it holds our clothes when they are drying.
Olái

14. It´s used to move material from one place to another with less effort.
WHEELBARROW
LOAD
EFFORT
It´s a second class lever
It´s used to move material from one place to another with less effort.
FULCRUM
Sara Sampedro Castro

15. TWEEZERS This is a tweezers, it is in a third class of lever.
Fulcrum L
It’s used to pluck.
Lucía Soto 2º ESO B

16. Hammer Daniel Correa Mier EFFORT
This is a hammer. It’s a second class lever.
LOAD
FULCRUM
Daniel Correa Mier

17. Pliers are a first class lever
Effort
Load
Pliers are a hand tool used to hold objects firmly, they are also useful for bending and compressing a wide range of materials.
Pliers means alicates in Spanish.
Fulcrum 17

18. Broom THIRD CLASS LEVER
FULCRUM
THIRD CLASS LEVER
EFFORT
LOAD
It´s used for sweep and a clean the house. It has rectangular and triangular shape. It´s made of wood.
JAIRO MORENO MARTÍNEZ