Welcome to Lego EnergyMathematics & Science Center

Simple Machines

Compound Machine

• Made of 2 or more simple machines

• Also known as a complex machine

Work

• Force is applied over a distance

• Force is a “push” or “pull”

• Use math to calculate• Work =

Force x Distance

Energy

• Ability to do work• Different kinds of

energy

Electricity

Mechanical

Light

Sound

etc.

Computer Workstation

Computer Workstation

• Computer runs the ROBOLAB software

Computer Workstation

• Mouse is used to move the cursor

Computer Workstation

• Monitor displays icons

• Icons are pictures of an object on the screen

Remote Control Car

• Gray cube is a motor

• Motor uses electrical energy to move

Remote Control Car

• Yellow BRICK is an RCX Brick

• Contains a computer• Uses electrical energy

to run• Controls the car when

we finish programming it

Assembly of Remote Control Car

• Gears• Mount Motor• Mount RCX Brick

Electricity

• Conductor – carries an electric current

• Insulator – does not carry an electric current

Types of Energy

• Potential – energy of position

• Kinetic – energy of movement

Recap

• Work = Force X Distance

• Energy is capacity to do work

• RCX Brick will release the same amount of energy each time

Will the car always go the same distance?

Experiment

Parts of an Experiment

Manipulated variable – What YOU change

Responding variable –

What changes on own

Constants – things that stay the same

Hypothesis

• Educated guess• If (change

manipulative variable) then (change responding variable)

• If car travels on ___ then the car will _____

Experimental Data

Experiment