diff --git a/modular_js/modules.md b/modular_js/modules.md
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+# Modular Patterns:
+
+## Douglas Crockford Style
+
+```javascript
+const Car = (name) => {
+    //private vars
+    let gas = 100;
+    const self = {}
+
+    //private method
+    const useGas = (amount) => {
+        gas -= amount
+    }
+
+    //public var
+    self.name = name
+
+    //public methods
+    self.drive = (distance)=>{
+        useGas(distance/5)
+    }
+    self.getGasLevel = ()=>{
+        return gas
+    }
+
+    return self;
+};
+
+const myCar = Car("Awesome Car");
+console.log(myCar.getGasLevel())
+myCar.drive(10)
+console.log(myCar.getGasLevel())
+```
+
+## MDN Style
+
+```JavaScript
+const Car = function(name) {
+  //private var
+  let gas = 100;
+
+  //private method
+  const useGas = (amount) => {
+    gas -= amount;
+  }
+
+  //public methods
+  this.drive = (distance) =>{
+    useGas(distance/5);
+  }
+  this.getGasLevel = () => {
+    return gas;
+  }  
+
+}
+
+const myCar = new Car("Awesome Car");
+console.log(myCar.getGasLevel())
+myCar.drive(10)
+console.log(myCar.getGasLevel())
+```
+
+## ES6 Class
+
+This one is different, because basically everything is public, but some stuff can be hidden upon creation
+
+```JavaScript
+class Car {
+    constructor(){
+        //private vars
+        this.gas = 100;
+        this.useGas = (amount) => {
+            this.gas -= amount
+        }
+    }
+    //public methods
+    drive(distance){
+        this.useGas(distance/5)
+    }
+    getGasLevel(){
+        return this.gas;
+    }
+}
+const myCar = new Car("Awesome Car");
+console.log(myCar.getGasLevel())
+myCar.drive(10);
+console.log(myCar.getGasLevel())
+```