The document describes how to construct a 3D timeline out of materials like wood, metal strips, and clay to teach verb tenses in a hands-on way. Teachers can make their own large timeline or photocopy smaller versions for students to manipulate cutout verbs on. The timeline is divided into past, present, and future sections to demonstrate how verbs change form based on tense. Students place example sentences using different verb tenses onto the timeline to better understand the concepts.