diff --git a/lib/eep.core.js b/lib/eep.core.js
index ff0684c..057c7e3 100755
--- a/lib/eep.core.js
+++ b/lib/eep.core.js
@@ -48,8 +48,8 @@ Temporal.make = function(initialValue, instant) {
 };
 
 // A (degenerated) temporal aggregate function. Useful for temporal stream operators
-var TemporalFunction = function(aggFn,instant) {
-  var self = this; var inner = aggFn.make(); var t;
+var TemporalFunction = function(aggFn,instant, win) {
+  var self = this; var inner = aggFn.make(win); var t;
   self.init =  function() { inner.init(); t = Temporal.make(inner.emit(), instant); };
   self.accumulate =  function(value) { t = t.update(inner.accumulate(value.value())); };
   self.emit = function()  { return Temporal.make(inner.emit()); };
@@ -57,8 +57,8 @@ var TemporalFunction = function(aggFn,instant) {
 }; 
 
 // Factory function for turning regular aggregate functions into temporal ones
-TemporalFunction.make = function(aggFn, at) {
-  return new TemporalFunction(aggFn, at);
+TemporalFunction.make = function(aggFn, at, win) {
+  return new TemporalFunction(aggFn, at, win);
 };
 
 // Exports
diff --git a/lib/eep.window_monotonic.js b/lib/eep.window_monotonic.js
index 6e290d9..8eb506e 100755
--- a/lib/eep.window_monotonic.js
+++ b/lib/eep.window_monotonic.js
@@ -28,7 +28,7 @@ var TemporalFunction = require('./eep.core').TemporalFunction;
 var MonotonicWindow = function(aggFn, clock) {
   events.EventEmitter.call(this);
   var self = this;
-  self.fn = TemporalFunction.make(aggFn,clock.init());
+  self.fn = TemporalFunction.make(aggFn,clock.init(),self);
   var idx = 0;
 
   self.fn.init();
diff --git a/lib/eep.window_periodic.js b/lib/eep.window_periodic.js
index 670fc6f..8e92220 100755
--- a/lib/eep.window_periodic.js
+++ b/lib/eep.window_periodic.js
@@ -31,7 +31,7 @@ var TemporalFunction = require('./eep.core').TemporalFunction;
 //
 var PeriodicWindow = function(aggFn, intervalMillis) {
   events.EventEmitter.call(this);
-  var self = this, clock = new WallClock(intervalMillis), fn = TemporalFunction.make(aggFn,clock.init());
+  var self = this, clock = new WallClock(intervalMillis), fn = TemporalFunction.make(aggFn,clock.init(),self);
   var idx = 0;
 
   fn.init();
diff --git a/lib/eep.window_sliding.js b/lib/eep.window_sliding.js
index 44d77cf..e4e22fa 100755
--- a/lib/eep.window_sliding.js
+++ b/lib/eep.window_sliding.js
@@ -58,7 +58,7 @@ var SlidingWindow = function(aggFn, n) {
 
   self.min = function() { throw "Unordered sliding window"; };
   self.max = function() { throw "Unordered sliding window"; };
-  self.size = function() { return win.size; };
+  self.size = function() { return n; };
 
   self.enqueue = function(v) {
     self.fn.accumulate(v);
diff --git a/test/test-windows.js b/test/test-windows.js
index f549921..7a0b8ff 100755
--- a/test/test-windows.js
+++ b/test/test-windows.js
@@ -1,6 +1,7 @@
 var eep = require("eep");
 var events = require('events');
 var testCase = require('nodeunit').testCase;
+var util = require('util');
 
 var floatEquals = function (a,b) {
   var a1 = Math.round(parseFloat(a)*100)/100;
@@ -19,7 +20,7 @@ function AvgFunction() {
   self.make = function() { return new AvgFunction(); };
 };
 
-CountFunction.protorype = new eep.AggregateFunction();
+CountFunction.prototype = new eep.AggregateFunction();
 function CountFunction() {
     var self = this; var count = 0;
 
@@ -49,8 +50,10 @@ exports.read = testCase({
     cb();
   },
   'tumbling window': function(assert) {
-    var tumbling  = eep.EventWorld.make().windows().tumbling(new AvgFunction(), 2);
+    const windowSize = 2;
+    var tumbling  = eep.EventWorld.make().windows().tumbling(new AvgFunction(), windowSize);
     assert.ok(tumbling != null);
+    assert.equal(tumbling.size(), windowSize);
 
     var results = new Array();
     tumbling.on('emit', function(v) {
@@ -66,8 +69,10 @@ exports.read = testCase({
     assert.done();
   },
   'sliding window': function(assert) {
-    var sliding  = eep.EventWorld.make().windows().sliding(new AvgFunction(), 2);
+    const windowSize = 2;
+    var sliding  = eep.EventWorld.make().windows().sliding(new AvgFunction(), windowSize);
     assert.ok(sliding != null);
+    assert.equal(sliding.size(), windowSize);
 
     var results = [];
     sliding.on('emit', function(v) {
@@ -172,6 +177,7 @@ exports.read = testCase({
 
     enqueueEvent();
     setTimeout(enqueueEvent, 20);
+    setTimeout(triggerTick, 50);
     setTimeout(enqueueEvent, 80);
     setTimeout(triggerTick, 100); //3
     setTimeout(triggerTick, 200); //empty window should be produced here
@@ -187,5 +193,100 @@ exports.read = testCase({
     setTimeout(function() {
       assert.done();
     }, 450);
+  },
+  'monotonic window counter': function (assert) {
+      var monotonic = eep.EventWorld.make().windows().monotonic(new CountFunction(), new eep.CountingClock());
+
+      assert.ok(monotonic != null);
+
+      var results = [];
+      monotonic.on('emit', function(v) {
+          results.push(v);
+      });
+
+      monotonic.enqueue(5);
+      assert.same([], results);
+
+      monotonic.tick();
+      assert.same([1], results);
+
+      monotonic.enqueue(4);
+      monotonic.enqueue(10);
+      monotonic.tick();
+      assert.same([1, 2], results);
+
+      setTimeout(function() {
+          monotonic.enqueue(3);
+          monotonic.enqueue(9);
+          monotonic.enqueue(81);
+      }, 50);
+
+      setTimeout(function() {
+          monotonic.tick();
+          assert.same([1, 2, 3], results);
+      }, 60);
+
+      setTimeout(function() {
+          monotonic.tick();
+          assert.same([1, 2, 3, 0], results);
+      }, 80);
+
+      setTimeout(function() {
+          assert.done();
+      }, 100);
+  },
+  'monotonic window when right': function (assert) {
+
+      function EmitWhenConditionsAreRight(optionsIn, win) {
+        const options = optionsIn;
+        this.win = win;
+
+        this.init = function() {
+          options.whatsUp = false;
+        };
+
+        this.accumulate = function(whatsUpNew) {
+            this.whatsUp = whatsUpNew;
+
+            if(this.whatsUp) {
+              win.tick();
+            }
+        };
+
+        this.compensate = function() {
+
+        };
+
+        this.emit = function() {
+          return !!this.whatsUp? 1:0;
+        };
+
+        this.make = function(win) { return new EmitWhenConditionsAreRight(options, win); };
+      }
+
+
+      var monotonic = eep.EventWorld.make().windows().monotonic(new EmitWhenConditionsAreRight({}), new eep.CountingClock());
+
+      assert.ok(monotonic != null);
+
+      var results = [];
+      monotonic.on('emit', function(v) {
+          results.push(v);
+      });
+
+
+      setTimeout(() => {monotonic.enqueue(false);}, 10);
+      setTimeout(() => {monotonic.enqueue(true);}, 20);
+      setTimeout(() => {monotonic.tick();}, 100);
+      setTimeout(() => {monotonic.enqueue(false);}, 120);
+      setTimeout(() => {monotonic.tick();}, 200);
+      setTimeout(() => {monotonic.enqueue(true);}, 220);
+
+      setTimeout(() => {assert.same([1,1,0,1], results);}, 300);
+
+
+      setTimeout(function() {
+          assert.done();
+      }, 310);
   }
 });