Review chapters 15 - 23

3 anni fa · 658950c4ca
--- a/Lesson15/Lesson15.odp
+++ b/Lesson15/Lesson15.odp
--- a/Lesson15/Lesson15.pdf
+++ b/Lesson15/Lesson15.pdf
--- a/Lesson16/Lesson16.odp
+++ b/Lesson16/Lesson16.odp
--- a/Lesson16/Lesson16.pdf
+++ b/Lesson16/Lesson16.pdf
--- a/Lesson17/Lesson17.odp
+++ b/Lesson17/Lesson17.odp
--- a/Lesson17/Lesson17.pdf
+++ b/Lesson17/Lesson17.pdf
--- a/Lesson18/Lesson18.odp
+++ b/Lesson18/Lesson18.odp
--- a/Lesson18/Lesson18.pdf
+++ b/Lesson18/Lesson18.pdf
--- a/Lesson19/Lesson19.odp
+++ b/Lesson19/Lesson19.odp
--- a/Lesson19/Lesson19.pdf
+++ b/Lesson19/Lesson19.pdf
--- a/Lesson20/Lesson20.odp
+++ b/Lesson20/Lesson20.odp
--- a/Lesson20/Lesson20.pdf
+++ b/Lesson20/Lesson20.pdf
--- a/Lesson21/Lesson21.odp
+++ b/Lesson21/Lesson21.odp
--- a/Lesson21/Lesson21.pdf
+++ b/Lesson21/Lesson21.pdf
--- a/Lesson22/Lesson22.odp
+++ b/Lesson22/Lesson22.odp
--- a/Lesson22/Lesson22.pdf
+++ b/Lesson22/Lesson22.pdf
--- a/Lesson23/Lesson23.odp
+++ b/Lesson23/Lesson23.odp
--- a/Lesson23/Lesson23.pdf
+++ b/Lesson23/Lesson23.pdf