diff --git a/Documentation1.md b/Documentation1.md
index 28f94fa..2dc20a4 100644
--- a/Documentation1.md
+++ b/Documentation1.md
@@ -1,19 +1,42 @@
-# Name: 
+# Name: Annie Zhou
 
 ## Examples:
-Insert examples here.
+void sinwave(){
+  fill(255);
+  angle += radians(1);
+  float y = sin(angle)*300 + height/2;
+  x+=8;
+  y+=randomNumber();
+  if(sizeLimit()){
+    x=0;
+  }
+  ellipse(x, y, major(mouseX,mouseY),minor(mouseX,mouseY));
+}
+float major(float a, float b){
+  return a%4+b%3;
+}
+float minor(float a, float b){
+  return (a+b)/15;
+}
+float randomNumber(){
+  return random(0,20);
+}
 
+boolean sizeLimit(){
+  return x>width;
+}
 ## Description:
-Insert description here
+This graphic function creates a sin wave of ellipses of sizes that vary based on where your mouse is.
 
 ## Syntax:
-Demonstrate syntax here
-
+void name(){}
+void name(int parameters){}
+void name(float parameters){}
+void name(boolean parameters){}
 ##Parameters: 
-Name and describe parameters here
-
+You can have as many parameters as you like. Parameters have a primitive before them
 ##Returns:
-What type of data does it return?
+no data returned
 
 ##Other notes:
 Anything else?
diff --git a/Documentation2.md b/Documentation2.md
index 28f94fa..dcd988b 100644
--- a/Documentation2.md
+++ b/Documentation2.md
@@ -1,19 +1,27 @@
-# Name: 
+# Name: Annie Zhou
 
 ## Examples:
-Insert examples here.
+float pyth(float x, float y){
+  hyp = sqrt(sq(x)+sq(y));
+  return hyp;
+}
 
 ## Description:
-Insert description here
+Returns the hypotenuse of a triangle
 
 ## Syntax:
-Demonstrate syntax here
+float name(){}
+float name(parameters){}
+
+
+
+name - name of function
 
 ##Parameters: 
-Name and describe parameters here
+You can have as many parameters as you like.
 
 ##Returns:
-What type of data does it return?
+a float
 
 ##Other notes:
 Anything else?
diff --git a/Documentation3.md b/Documentation3.md
index 28f94fa..b3c7d12 100644
--- a/Documentation3.md
+++ b/Documentation3.md
@@ -1,19 +1,25 @@
-# Name: 
+# Name: Annie Zhou
 
 ## Examples:
-Insert examples here.
+float[] unitVector(float hyp){
+  float [] thing= new float [2];
+  thing[0] = mouseX/hyp;
+  thing[1] = mouseY/hyp;
+  return thing;
+}
 
 ## Description:
-Insert description here
+Physics function that returns the unit vector of your mouse from the origin.
 
 ## Syntax:
-Demonstrate syntax here
+float[] name(){}
+float[] name(parameters){}
 
 ##Parameters: 
-Name and describe parameters here
+any parameters. I used a float found in a previous function.
 
 ##Returns:
-What type of data does it return?
+an array with 2 floats
 
 ##Other notes:
 Anything else?
diff --git a/sketch_151209a/sketch_151209a.pde b/sketch_151209a/sketch_151209a.pde
new file mode 100644
index 0000000..42ccac0
--- /dev/null
+++ b/sketch_151209a/sketch_151209a.pde
@@ -0,0 +1,60 @@
+float hyp;
+float angle = 0;
+float x = 0;
+void setup(){
+  size(600,600);
+  background(0);
+}
+void draw(){
+  sinwave();
+  unitVector(pyth(mouseX,mouseY));
+}
+
+//graphic function
+//makes a sin wave continuously across the screen
+void sinwave(){
+  fill(255);
+  angle += radians(1);
+  float y = sin(angle)*300 + height/2;
+  x+=8;
+  y+=randomNumber();
+  
+  //once sin wave reaches end, restarts at a different place
+  if(sizeLimit()){
+    x=0;
+  }
+  //turns wave into circles
+  ellipse(x, y, major(mouseX,mouseY),minor(mouseX,mouseY));
+}
+//varies major axis of ellipse
+float major(float a, float b){
+  return a%4+b%3;
+}
+//varied minor axis of ellipse
+float minor(float a, float b){
+  return (a+b)/15;
+}
+//where the y posiion of your ellipse goes
+float randomNumber(){
+  return random(0,20);
+}
+//tells once sin wave goes to end of screen
+boolean sizeLimit(){
+  return x>width;
+}
+
+//math based function
+//gives the hypotenuse length from (0,0) to parameters(where mouse is)
+float pyth(float x, float y){
+  
+  hyp = sqrt(sq(x)+sq(y));
+  return hyp;
+}
+//physics based function
+//finds the unit vector of where your mouse is.
+float[] unitVector(float hyp){
+  float [] thing= new float [2];
+  thing[0] = mouseX/hyp;
+  thing[1] = mouseY/hyp;
+  return thing;
+}
\ No newline at end of file