A Blackline Master (BLM) is a teaching/learning resource that comes with a license from publishers, allowing the purchaser to copy some or all of its contents. These resources are commonly referred to as Blackline Masters. Essentially, they provide educators with the ability to reproduce specific pages or components of a resource for instructional purposes.  Blackline Masters are designed to support teaching and learning. They often contain worksheets, activity pages, graphic organizers, or other educational materials.

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