diff --git a/unit00_introduction/unit01_introduction.pdf b/unit00_introduction/unit01_introduction.pdf
index e81f517..700c01d 100644
Binary files a/unit00_introduction/unit01_introduction.pdf and b/unit00_introduction/unit01_introduction.pdf differ
diff --git a/unit00_introduction/unit01_introduction.pptx b/unit00_introduction/unit01_introduction.pptx
index 0dde2a5..182a423 100644
Binary files a/unit00_introduction/unit01_introduction.pptx and b/unit00_introduction/unit01_introduction.pptx differ