Give students a choice of 6-10 materials, in which they have to choose three to build a bridge. Have them work as a team to decide which materials will be best to construct this bridge, and what it will look like! Make predictions of how many marbles your bridge will hold and set that timer! After students have finished their bridges, they can work together to write goals/strategies that would make their bridges stronger and what they could have done differently!
Love using this activity with my 4th graders for FUN FRIDAY!