Ask the group: Feel your environment and describe it.
Everyone feel and describes.
Everyone feels and describes
Everyone feels and describes the texture.
Have the students offer antonyms to describe an opposite feeling.
Behind The Scenes: Facilitator explains process.
Explaining vocabulary for friction and the antonyms
Ask the group: What do we notice about these materials when we compare their opposites.
Students begin playing Algodoo.
Algodoo is an amazing sandbox application download at www.algodoo.com.
Student select different materials to slide the cube down the slide. They can select different materials for the cube, the slide, and the bottom segments of the platform.
They can select different materials like gold rubber, ice, and glass.
The goal is to select the right materials so that you get to the end of the platform without falling off. Closer to the edge of the path, the better the score. Group students and have them compete.
Tanner plays Algadoo!
Tanner does a "talk aloud"
Behind the scenes: We talk about constraining it to friction as the only variable.
Tanner uses all ice.
Tanner chooses all ice and the ending platform as stone.
Tanner tries to slow it down a little more with steel.
Tanner tries wood at the end.
Wood on the last platform.
Will he make it?
Ted takes it back to the board and to the terms.
Facilitator has students slide with different shoes.
We look at Tanners shoe. We ask what do we see here?
Have students feel and describe the texture.
We talk about skin. We discuss why does skin have such a grip and so much friction? We move to biology. Why have we evolved to be so grippy? What would it be like if our skin was slippery.
Talking about skin and friction.
Getting to "Friction"
Talk about friction at molecular level. Zoom in on the concept.
From far away things look smooth.
...on further inspection they have texture.
Use the white board to highlight the idea.
Connected to the idea of earthquakes.
Open ended activity to express friction.