Friday, February 26, 2010
The Future of Learning
“This isn’t the information age, it’s the learning age” – Stephen Heppell
Two important ideas in this video are the ideas of “learning to learn” and “learning by failing”.
Tuesday, February 16, 2010
Monday, February 8, 2010
Co-operative Groups
Sunday, February 7, 2010
The Wreck of the Zanzibar Poll 2009
Gas
Run in place very fast for a minute. Do you notice how hard you are breathing? What you are breathing is oxygen? You need oxygen to live. That's why you can only hold your breath for a certain amount of time.
You can't see oxygen. It's invisible. It is a gas. A gas is matter that has no shape or size of its own. Gases have no colour.
Gases are all around you. You can feel gas when the wind blows. The wind is moving air. Air is many gases mixed together.
Liquid
Milk is a liquid. Milk is liquid matter. It has a size or volume. Volume means it takes up space. But milk doesn't have a definite shape. It takes the shape of its container.
Liquids can flow, be poured, and spilled. Did you ever spill juice? Did you notice how the liquid goes everywhere and you have to hurry and wipe it up? The liquid is taking the shape of the floor and the floor is a limitless boundary (until it hits the wall). You can't spill a wooden block. You can drop it and it still has the same shape.
What about peanut butter and jam?
You can spread peanut butter on bread, but peanut butter does not flow. It is not a liquid at room temperature. You have to heat peanut butter up to make it a liquid. When you or your mom makes jam, it is first a liquid. You have to put it in the refrigerator so that it becomes a solid. These are yummy forms of matter with properties of a liquid and a solid.
Solids
Solids
The wood block is solid. A solid has a certain size and shape. The wood block does not change size or shape. Other examples of solids are the computer, the desk, and the floor.
You can change the shape of solids. You change the shape of sheets of timber by sawing it in half or burning it.
eg from wood to smoke
Solids, Liquids, Gases
• Keeps its own shape
• All particles are very close together
LIQUIDS
• Fills the shape of the container
• Particles are not close together
GASES
• Fills all the space around them
• Particles are not close together