MACHINES

Machines are instruments made by people to help them to do their work.
Pulleys, ramps and levers are machines.

In class we are using different machines and learning about them.

Look at the photos:
https://picasaweb.google.com/112689455191342219309/MACHINES#

Now play and learn about simple and complex machines:
http://www.edheads.org/activities/simple-machines/index.htm

FOOD- 4th Penguins in the Fridge

Read the story "Penguins in the fridge"

Now look in your fridge and make a list of the food in it.

Matter can change

HEAT- 4th level

In class we've done an experiment to learn about how heat passes through some materials like copper or glass.
Look at the photos:
http://picasaweb.google.com/linaespel/ThermalConductors#