Straw And Rubber Band Bridge

Once completed the bridge will be a firm structure still capable of movement.

Straw and rubber band bridge.

Paper 1 cup 1 balloon 2 rubber bands 4 spoons 6 mailing labels 2 straws 10 toothpicks string. 20 straws and tape. Stack of paper from recycling. Balance the blown up balloon in the cup.

Before building dad and aidan looked at different types of bridge designs on this site. Once their bridge is complete participants will place pennies or metal washers at the center of the bridge s span to measure how much weight it can support. 10 seconds 3 the band must not fall. They experiment with different geometric shapes and determine how shapes affect the strength of materials.

Give the teams time to plan and build their bridge. Build a bridge out of straws and straight pins that can support the weight of 100 pennies in a small cup. 1 hands not allowed to hold the straws or rubberband. Straws are flexible so manipulate them into shape to create your structure.

Now build a tower as tall as you can on top of the balloon using the materials. Their goal is to build the strongest bridge with a truss pattern of their own design while meeting the design criteria and constraints. Working as engineering teams students design and create model beam bridges using plastic drinking straws and tape as their construction materials. Last friday at cc there was a project introduced for the students to build bridges made from straws r.

Build a truss bridge that spans at least 25 cm using only straws and tape. Insert the straws end to end and secure them with the pins. Use more pins and glue to attach the straw bridge to the stabilizing straws on the wood posts. See more ideas about straw bridge classical conversations stem science.

4 if the rubberband drops the straw has to be cut rules. 2 pass the rubberband before the time limit time limit example. This is another activity idea for a popsicle stick bridge but if you scroll down a couple pages there is information about different. Distribute supplies to each team.