Set two wood rulers side by side lengthwise. Set two wood craft sticks horizontally across the rulers. Move one craft stick to each end of the rulers.
Separate the rulers under the craft sticks so the outside edge of each ruler sits level with the edges of the two craft sticks. Glue the craft sticks to the rulers, placing glue between the rulers and the craft sticks.
Ask the children to set more craft sticks on top of the rules, between the two craft sticks you affixed to the edges of the rulers. Assist the children with lining up the craft sticks properly.
Glue the craft sticks to the rulers, placing glue between the rulers and the craft sticks. Allow the children to assist you with this step, but watch them carefully to ensure they don’t make a mess.
Allow the simple bridge to sit until the glue dries. Set the finished product over a gap between two tables. Show the children how the bridge can hold items without breaking.