Friday, February 8, 2013

Forces All Around Us

We read an article about the forces that are all around us. Each student group was responsible for explaining an everyday force as indicated in the article. Here are some snippets from their presentations:

The importance of wheels.
This group started their presentation by trying to roll the large green box.
"It would be much easier to roll this box if it was circular in shape."
The they explained why the bin table at the front of the room had wheels, showing how much easier it was to move. The wheels help reduce the amount of friction between the item being moved and the surface it's being moved on.

 "When you take a step, your foot is pushing down on the floor."

If the ground is cement, and you just step on it, it's not going to make a movement.

We had to voice record Logan's explanation:

Size matters. Gravity.

This group worked hard to explain and show what gravity does. They demonstrated dropping articles of different sizes and weights to show how gravity works on the various items. The interesting part was when they added a makeshift parachute to an item. How do parachutes work against gravity?


The girls presenting the section on friction thought this video and song best outlined the concepts from the article.

Push or Pull

A push and a pull is something everyone is familiar with.  Have you ever considered it like this?

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