To complete this lesson, students build the tallest freestanding structure they can that will support a marshmallow for at least 15 seconds. Though a marshmallow might not seem like a significant mass to support, students will find the challenge when they are constrained to using spaghetti sticks and tape. The same forces, like gravity and wind, that engineers have to take into consideration when working on Deep Space Network antennas come into play when building a spaghetti structure. In small