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This Bridge Building packet is used for hands-on science. Students are able to use whatever materials you allow and they are to work with a small team to create a paper bridge that holds weight.
I used copy paper and masking tape as my only materials. The students were able to only use four sheets of tape and 12" of masking tape to create a bridge. I allowed 5 minutes for each "trial" which kept the students on task and working hard. After the 5 minutes, the bridges were all tested one by one up at the "bridge testing table."
I had stacked two piles of books about 6" high and the width of one piece of paper apart. The bridges were set on top of the books and were required to be stable enough to hold up on the books without any other support.
Then I placed a thin cardboard square (2"x2") on top of the bridge. On top of the cardboard, I used a lightweight container to hold the weights. A plastic cup works well! Then, one by one, we counted and added metal washers as weights to see how strong the bridge was.
I turned it into a competition to see which team could build the best bridge! I gave my students 6 trials. However, you may print out as many trial pages as you would like. This was a very fun activity for my 2nd graders!