diff --git a/Fall-2024/CS-3113/Lessons/lesson_13.pdf b/Fall-2024/CS-3113/Lessons/lesson_13.pdf
new file mode 100644
index 0000000..944024d
Binary files /dev/null and b/Fall-2024/CS-3113/Lessons/lesson_13.pdf differ
diff --git a/Fall-2024/CS-3113/Lessons/lesson_15.pdf b/Fall-2024/CS-3113/Lessons/lesson_15.pdf
new file mode 100644
index 0000000..dbde6d5
Binary files /dev/null and b/Fall-2024/CS-3113/Lessons/lesson_15.pdf differ