BUILDING BRIDGES

On Friday we were engineering a bridge made out of play do and finding the weak and strong parts. We learnt about civil engineers and how they design bridges. We also read a book about different types of bridges before we designed and created our own.

This is what you need to build a bridge

• tooth picks
• a Lego car {To test if your car can hold the balance}
• play dough {to hold the tooth picks together}

We used square shapes to make our first bridge but it was not strong and it could not hold a lego car.

Then we use triangle shapes in our bridge and it was so so so strong! It held the car

Quiz 
What is the strongest shape?

• circle
• triangle
• square