diff --git a/db/teaching/cse4_562/2018sp/schedule.json b/db/teaching/cse4_562/2018sp/schedule.json
index 1944ad0a..002bac1e 100644
--- a/db/teaching/cse4_562/2018sp/schedule.json
+++ b/db/teaching/cse4_562/2018sp/schedule.json
@@ -129,13 +129,15 @@
     "due": "",
     "topic": "Cost-Based Optimization",
     "materials": {
+      "slides" : "https://odin.cse.buffalo.edu/slides/cse4562sp2018/2018-02-28-CostBasedOptimization1.html",
+      "homework 2" : "https://odin.cse.buffalo.edu/teaching/cse-562/2018sp/homeworks/homework2.pdf"
     }
   },
   {
     "date": "Mar 2",
     "type": "Practicum",
     "due": "",
-    "topic": "Optimizing RA",
+    "topic": "[Class Canceled]",
     "materials": {
     }
   },
@@ -158,7 +160,7 @@
   {
     "date": "Mar 9",
     "type": "Review",
-    "due": "",
+    "due": "Homework 2",
     "topic": "Midterm Review",
     "materials": {
     }
diff --git a/src/teaching/cse-562/2018sp/homeworks/homework2.pdf b/src/teaching/cse-562/2018sp/homeworks/homework2.pdf
new file mode 100644
index 00000000..c900ecee
Binary files /dev/null and b/src/teaching/cse-562/2018sp/homeworks/homework2.pdf differ