@@ -1,20 +1,29 @@
-
 // Predict and explain first BEFORE you run any code...
 
 // this function should square any number but instead we're going to get an error
 
+// Prediction: I predict that an error will occur because 3 cannot
+// be used as a function parameter name.
+
 // =============> write your prediction of the error here
 
-function square(3) {
+function square(num) {
+
     return num * num;
+
 }
 
 // =============> write the error message here
 
+// SyntaxError: Unexpected number
+
 // =============> explain this error message here
 
+// The error happens because 3 is a number, not a valid parameter name.
+// A function parameter needs to be a variable name, such as num.
+
 // Finally, correct the code to fix the problem
 
 // =============> write your new code here
 
-
+console.log(square(3));