This is a SMARTboard .notebook file containing a lesson on Prime Factors. Students should have some knowledge of factors. The objective is to have students demonstrating their knowledge of prime factorization by creating a prime factor Christmas Trees. The file includes an 8 page .notebook file with teacher notes, instruction, and two scaffolded practice pages. There is also a link to open a four page .doc file that includes teacher lesson plans, printable worksheets, and a rubric for grading