i got jokes! Why did the chicken cross the road? To get to the other side!

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Presentation transcript:

i got jokes! Why did the chicken cross the road? To get to the other side!

whatcha think? Why did the farmer cross the river? To get fertilizer and seed. To take products to market. To get medicine for a sick horse.

whatcha think? HOW did the farmer cross the river? A long time ago…a BOAT! Now? Bridges!

Did you ever go to a waterpark?

Beam Bridge

Truss Bridge

Arch Bridge

Suspension Bridge

Cantilever Bridge

whatcha think? How do you play tug-of-war? Do you pull or push?

whatcha think? What happens if one team is stronger than the other team?

whatcha think? What would happen if you pushed instead of pulled?

whatcha think? What happens to the rubber band as you pull on it– as you apply tension?

whatcha think? If you applied too much tension to the rubber band what will eventually happen?

What would happen if a bridge was held up by strong metal cables, but there was too much weight pulling on the bridge? whatcha think?

Face each other and lock Fingers. Gently lean back.

What happens if these two bridge anchors pulled too hard? whatcha think?

Face each other and place your palms together. Gently lean forward.

What happens if these two bridge anchors pushed too hard? whatcha think?

What would happen if someone was sitting on your shoulders and pushing down? whatcha think? What is pushing back?

Face each other and place your palms together and form an arch. Take a small step backward. Keep going backward until you can’t press your hands anymore.

Are you pushing or pulling? whatcha think? Did you snap or buckle?

Arch Bridge

When you created an arch with your partner, where did you feel the most pressure? whatcha think?

Suspension Bridge

Which parts of the bridge have tension? whatcha think? Who is pulling on the rope?

Which parts of the bridge have compression? whatcha think? Who is pushing on the rope?

Is there more tension when the towers stand closer together or farther apart? whatcha think?

What happens if one of the towers is removed? whatcha think? What happens if one of the anchors is removed?