Saxon Teacher walks students through each lesson, investigation, and lab in the textbook, as well as all lesson practices and problems. These Algebra 1 DVD-ROMs contain over one hundred hours of content that include lesson instruction as well as step-by-step solutions for all practice problems and test questions. Visuals feature a 'marker' writing on the screen with voiceover; graphing calculator screen shots and coordinate plane visuals are also included. For use with Algebra 1 4th Edition. Three Lesson DVDs and 1 Test Solutions DVD included.