Straw And Rubber Band Bridge

Stack of paper from recycling.

Straw and rubber band bridge.

1 hands not allowed to hold the straws or rubberband. Once completed the bridge will be a firm structure still capable of movement. Build a truss bridge that spans at least 25 cm using only straws and tape. Give the teams time to plan and build their bridge.

Their goal is to build the strongest bridge with a truss pattern of their own design while meeting the design criteria and constraints. They experiment with different geometric shapes and determine how shapes affect the strength of materials. Distribute supplies to each team. Use more pins and glue to attach the straw bridge to the stabilizing straws on the wood posts.

2 pass the rubberband before the time limit time limit example. Balance the blown up balloon in the cup. Insert the straws end to end and secure them with the pins. Build a bridge out of straws and straight pins that can support the weight of 100 pennies in a small cup.

4 if the rubberband drops the straw has to be cut rules. See more ideas about straw bridge classical conversations stem science. 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. How to play straws and rubberbands 1 each person gets a straw 2 the straw must be held using their mouth 3 they have to pass the rubberband around using the straw.

Last friday at cc there was a project introduced for the students to build bridges made from straws r. Before building dad and aidan looked at different types of bridge designs on this site. Straws are flexible so manipulate them into shape to create your structure. This is another activity idea for a popsicle stick bridge but if you scroll down a couple pages there is information about different.

Paper 1 cup 1 balloon 2 rubber bands 4 spoons 6 mailing labels 2 straws 10 toothpicks string. Working as engineering teams students design and create model beam bridges using plastic drinking straws and tape as their construction materials. More information straw and rubber band bridge engineering challenge stem. 10 seconds 3 the band must not fall.