diff --git a/Lesson4/Lesson4-Lab.odp b/Lesson4/Lesson4-Lab.odp
index 56c6444..c8ace02 100644
Binary files a/Lesson4/Lesson4-Lab.odp and b/Lesson4/Lesson4-Lab.odp differ
diff --git a/Lesson4/Lesson4-Lab.pdf b/Lesson4/Lesson4-Lab.pdf
index 5f0f6a9..4ba7a89 100644
Binary files a/Lesson4/Lesson4-Lab.pdf and b/Lesson4/Lesson4-Lab.pdf differ