diff --git a/HISTORY.md b/HISTORY.md
index 6220cec5..ea031b6a 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -4,6 +4,7 @@
 
 * **New Features:**
     * hyperdyadic MIN and MAX primitives reachable via "relabel"
+    * hyperdyadic less / great than or equals primitives reachable via "relabel"
 * **Notable Changes:**
     * searching for blocks and keyboard entry now includes the contents of dropdown menus
 * **Notable Fixes:**
@@ -11,6 +12,7 @@
 
 ### 2020-12-01
 * threads, objects: added hyperdyadic MIN and MAX primitives reachable via "relabel"
+* threads, objects: added hyperdyadic less/greaterThanOrEquals prims 
 
 ### 2020-11-30
 * threads: keep internal linked-list organization intact for hyperblocks
diff --git a/src/objects.js b/src/objects.js
index 1e3f0792..1429445f 100644
--- a/src/objects.js
+++ b/src/objects.js
@@ -1122,21 +1122,31 @@ SpriteMorph.prototype.initBlocks = function () {
             spec: 'pick random %n to %n',
             defaults: [1, 10]
         },
-        reportLessThan: {
-            type: 'predicate',
-            category: 'operators',
-            spec: '%s < %s'
-        },
         reportEquals: {
             type: 'predicate',
             category: 'operators',
             spec: '%s = %s'
         },
+        reportLessThan: {
+            type: 'predicate',
+            category: 'operators',
+            spec: '%s < %s'
+        },
+        reportLessThanOrEquals: {
+            type: 'predicate',
+            category: 'operators',
+            spec: '%s \u2264 %s'
+        },
         reportGreaterThan: {
             type: 'predicate',
             category: 'operators',
             spec: '%s > %s'
         },
+        reportGreaterThanOrEquals: {
+            type: 'predicate',
+            category: 'operators',
+            spec: '%s \u2265 %s'
+        },
         reportAnd: {
             type: 'predicate',
             category: 'operators',
@@ -1654,9 +1664,12 @@ SpriteMorph.prototype.blockAlternatives = {
         'reportQuotient', 'reportPower', 'reportModulus', 'reportMax'],
     reportMax: ['reportSum', 'reportDifference', 'reportProduct',
         'reportQuotient', 'reportPower', 'reportModulus', 'reportMin'],
-    reportLessThan: ['reportEquals', 'reportGreaterThan'],
-    reportEquals: ['reportLessThan', 'reportGreaterThan'],
-    reportGreaterThan: ['reportEquals', 'reportLessThan'],
+    reportLessThan: ['reportLessThanOrEquals', 'reportEquals',
+        'reportGreaterThan', 'reportGreaterThanOrEquals'],
+    reportEquals: ['reportLessThan', 'reportLessThanOrEquals',
+        'reportGreaterThan', 'reportGreaterThanOrEquals'],
+    reportGreaterThan: ['reportGreaterThanOrEquals', 'reportEquals',
+        'reportLessThan', 'reportLessThanOrEquals'],
     reportAnd: ['reportOr'],
     reportOr: ['reportAnd'],
 
diff --git a/src/threads.js b/src/threads.js
index f85d5e9e..236bf870 100644
--- a/src/threads.js
+++ b/src/threads.js
@@ -3743,6 +3743,14 @@ Process.prototype.reportLessThan = function (a, b) {
     return this.hyperDyadic(this.reportBasicLessThan, a, b);
 };
 
+Process.prototype.reportLessThanOrEquals = function (a, b) {
+    return this.hyperDyadic(
+        (a, b) => !this.reportBasicGreaterThan(a, b),
+        a,
+        b
+    );
+};
+
 Process.prototype.reportBasicLessThan = function (a, b) {
     var x = +a,
         y = +b;
@@ -3753,20 +3761,18 @@ Process.prototype.reportBasicLessThan = function (a, b) {
     return x < y;
 };
 
-Process.prototype.reportNot = function (bool) {
-    if (this.enableHyperOps) {
-        if (bool instanceof List) {
-            return bool.map(each => this.reportNot(each));
-        }
-    }
-    // this.assertType(bool, 'Boolean');
-    return !bool;
-};
-
 Process.prototype.reportGreaterThan = function (a, b) {
     return this.hyperDyadic(this.reportBasicGreaterThan, a, b);
 };
 
+Process.prototype.reportGreaterThanOrEquals = function (a, b) {
+    return this.hyperDyadic(
+        (a, b) => !this.reportBasicLessThan(a, b),
+        a,
+        b
+    );
+};
+
 Process.prototype.reportBasicGreaterThan = function (a, b) {
     var x = +a,
         y = +b;
@@ -3781,6 +3787,16 @@ Process.prototype.reportEquals = function (a, b) {
     return snapEquals(a, b);
 };
 
+Process.prototype.reportNot = function (bool) {
+    if (this.enableHyperOps) {
+        if (bool instanceof List) {
+            return bool.map(each => this.reportNot(each));
+        }
+    }
+    // this.assertType(bool, 'Boolean');
+    return !bool;
+};
+
 Process.prototype.reportIsIdentical = function (a, b) {
     var tag = 'idTag';
     if (this.isImmutable(a) || this.isImmutable(b)) {