diff --git a/unit00_introduction/unit01_introduction.pdf b/unit00_introduction/unit01_introduction.pdf
index 4a8e887..e81f517 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 85841dc..0dde2a5 100644
Binary files a/unit00_introduction/unit01_introduction.pptx and b/unit00_introduction/unit01_introduction.pptx differ