Learn how to read and say large numbers with Infinity Street. We recommend printing the houses, place value cards, and mailboxes on card stock and then cut them out. For added durability in your classroom, you can laminate the material. Houses include simple, thousand, billion, trillion, quadrillion, quintillion, and sextillion. You can find several versions of the lesson on YouTube, including https://www.youtube.com/watch?v=ZnVbDuzbkCc and https://www.youtube.com/watch?v=9SA5u21ABPI