diff --git a/src/course-home/data/__snapshots__/redux.test.js.snap b/src/course-home/data/__snapshots__/redux.test.js.snap
index e1ff2738..504c866e 100644
--- a/src/course-home/data/__snapshots__/redux.test.js.snap
+++ b/src/course-home/data/__snapshots__/redux.test.js.snap
@@ -396,8 +396,6 @@ Object {
         "courseBlocks": Object {
           "courses": Object {
             "block-v1:edX+DemoX+Demo_Course+type@course+block@bcdabcdabcdabcdabcdabcdabcdabcd3": Object {
-              "effortActivities": undefined,
-              "effortTime": undefined,
               "hasScheduledContent": false,
               "id": "course-v1:edX+DemoX+Demo_Course_1",
               "sectionIds": Array [
@@ -410,8 +408,6 @@ Object {
             "block-v1:edX+DemoX+Demo_Course+type@chapter+block@bcdabcdabcdabcdabcdabcdabcdabcd2": Object {
               "complete": false,
               "courseId": "course-v1:edX+DemoX+Demo_Course_1",
-              "effortActivities": 2,
-              "effortTime": 15,
               "id": "block-v1:edX+DemoX+Demo_Course+type@chapter+block@bcdabcdabcdabcdabcdabcdabcdabcd2",
               "resumeBlock": false,
               "sequenceIds": Array [
@@ -425,8 +421,8 @@ Object {
               "complete": false,
               "description": null,
               "due": null,
-              "effortActivities": undefined,
-              "effortTime": undefined,
+              "effortActivities": 2,
+              "effortTime": 15,
               "icon": null,
               "id": "block-v1:edX+DemoX+Demo_Course+type@sequential+block@bcdabcdabcdabcdabcdabcdabcdabcd1",
               "legacyWebUrl": "http://localhost:18000/courses/course-v1:edX+DemoX+Demo_Course/jump_to/block-v1:edX+DemoX+Demo_Course+type@sequential+block@bcdabcdabcdabcdabcdabcdabcdabcd1?experience=legacy",
diff --git a/src/course-home/data/api.js b/src/course-home/data/api.js
index ae0858d4..e6fd22d5 100644
--- a/src/course-home/data/api.js
+++ b/src/course-home/data/api.js
@@ -111,8 +111,6 @@ export function normalizeOutlineBlocks(courseId, blocks) {
     switch (block.type) {
       case 'course':
         models.courses[block.id] = {
-          effortActivities: block.effort_activities,
-          effortTime: block.effort_time,
           id: courseId,
           title: block.display_name,
           sectionIds: block.children || [],
@@ -123,8 +121,6 @@ export function normalizeOutlineBlocks(courseId, blocks) {
       case 'chapter':
         models.sections[block.id] = {
           complete: block.complete,
-          effortActivities: block.effort_activities,
-          effortTime: block.effort_time,
           id: block.id,
           title: block.display_name,
           resumeBlock: block.resume_block,
diff --git a/src/course-home/outline-tab/Section.jsx b/src/course-home/outline-tab/Section.jsx
index ce69f760..b5078126 100644
--- a/src/course-home/outline-tab/Section.jsx
+++ b/src/course-home/outline-tab/Section.jsx
@@ -6,7 +6,6 @@ import { faCheckCircle as fasCheckCircle, faMinus, faPlus } from '@fortawesome/f
 import { faCheckCircle as farCheckCircle } from '@fortawesome/free-regular-svg-icons';
 import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
 
-import EffortEstimate from '../../shared/effort-estimate';
 import SequenceLink from './SequenceLink';
 import { useModel } from '../../generic/model-store';
 
@@ -67,7 +66,6 @@ function Section({
         <span className="sr-only">
           , {intl.formatMessage(complete ? messages.completedSection : messages.incompleteSection)}
         </span>
-        <EffortEstimate className="ml-3 align-middle" block={section} />
       </div>
     </div>
   );
diff --git a/src/courseware/course/sequence/sequence-navigation/UnitNavigationEffortEstimate.jsx b/src/courseware/course/sequence/sequence-navigation/UnitNavigationEffortEstimate.jsx
index fda53302..7f797226 100644
--- a/src/courseware/course/sequence/sequence-navigation/UnitNavigationEffortEstimate.jsx
+++ b/src/courseware/course/sequence/sequence-navigation/UnitNavigationEffortEstimate.jsx
@@ -1,23 +1,28 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 import { useSelector } from 'react-redux';
+import { injectIntl, intlShape } from '@edx/frontend-platform/i18n';
 
 import EffortEstimate from '../../../../shared/effort-estimate';
 import { sequenceIdsSelector } from '../../../data';
 import { useModel } from '../../../../generic/model-store';
 
-// This component exists to peek ahead at the next subsection or section and grab its estimated effort.
-// If we should be showing the next block's effort, we display the title and effort instead of "Next".
-// This code currently tries to handle both section and subsection estimates. But once AA-659 happens, it can be
-// simplified to one or the other code path.
+import messages from './messages';
 
-function UnitNavigationEffortEstimate({ children, sequenceId, unitId }) {
+// This component exists to peek ahead at the next sequence and grab its estimated effort.
+// If we should be showing the next sequence's effort, we display the title and effort instead of "Next".
+
+function UnitNavigationEffortEstimate({
+  children,
+  intl,
+  sequenceId,
+  unitId,
+}) {
   const sequenceIds = useSelector(sequenceIdsSelector);
   const sequenceIndex = sequenceIds.indexOf(sequenceId);
   const nextSequenceId = sequenceIndex < sequenceIds.length - 1 ? sequenceIds[sequenceIndex + 1] : null;
   const sequence = useModel('sequences', sequenceId);
   const nextSequence = useModel('sequences', nextSequenceId);
-  const nextSection = useModel('sections', nextSequence ? nextSequence.sectionId : null);
 
   if (!sequence || !nextSequence) {
     return children;
@@ -28,32 +33,23 @@ function UnitNavigationEffortEstimate({ children, sequenceId, unitId }) {
     return children;
   }
 
-  let blockToShow = nextSequence;
-  // The experimentation code currently only sets effort on either sequences, sections, or nothing. If we don't have
-  // sequence info, we are either doing sections or nothing. Let's look into it.
+  // If we don't have info to show for the next sequence, just bail
   if (!nextSequence.effortActivities && !nextSequence.effortTime) {
-    if (!nextSection.effortActivities && !nextSection.effortTime) {
-      return children; // control group - no effort estimates at all
-    }
-
-    // Are we at a section border? If so, let's show the next section's effort estimates
-    if (sequence.sectionId !== nextSequence.sectionId) {
-      blockToShow = nextSection;
-    }
+    return children;
   }
 
-  // Note: we don't use `children` here - we replace it with the next section name.
-  // AA-659: remember to add a translation for Next Up
+  // Note: we don't use `children` here - we replace it with the next sequence's title.
   return (
     <div className="d-inline-block text-wrap">
-      Next Up: {blockToShow.title}
-      <EffortEstimate className="d-block mt-1" block={blockToShow} />
+      {intl.formatMessage(messages.nextUpButton, { title: nextSequence.title })}
+      <EffortEstimate className="d-block mt-1" block={nextSequence} />
     </div>
   );
 }
 
 UnitNavigationEffortEstimate.propTypes = {
   children: PropTypes.node,
+  intl: intlShape.isRequired,
   sequenceId: PropTypes.string.isRequired,
   unitId: PropTypes.string,
 };
@@ -63,4 +59,4 @@ UnitNavigationEffortEstimate.defaultProps = {
   unitId: null,
 };
 
-export default UnitNavigationEffortEstimate;
+export default injectIntl(UnitNavigationEffortEstimate);
diff --git a/src/courseware/course/sequence/sequence-navigation/messages.js b/src/courseware/course/sequence/sequence-navigation/messages.js
index fc947f96..9d99fdd4 100644
--- a/src/courseware/course/sequence/sequence-navigation/messages.js
+++ b/src/courseware/course/sequence/sequence-navigation/messages.js
@@ -6,6 +6,11 @@ const messages = defineMessages({
     defaultMessage: 'Next',
     description: 'Button to advance to the next section',
   },
+  nextUpButton: {
+    id: 'learn.sequence.navigation.next.up.button',
+    defaultMessage: 'Next Up: {title}',
+    description: 'Button to advance to the next section, with title',
+  },
   previousButton: {
     id: 'learn.sequence.navigation.previous.button',
     defaultMessage: 'Previous',
diff --git a/src/courseware/data/__factories__/courseMetadata.factory.js b/src/courseware/data/__factories__/courseMetadata.factory.js
index 7b84c58a..49a06223 100644
--- a/src/courseware/data/__factories__/courseMetadata.factory.js
+++ b/src/courseware/data/__factories__/courseMetadata.factory.js
@@ -9,7 +9,6 @@ Factory.define('courseMetadata')
     can_show_upgrade_sock: false,
     content_type_gating_enabled: false,
     course_expired_message: null,
-    effort: null,
     end: null,
     enrollment_start: null,
     enrollment_end: null,
diff --git a/src/courseware/data/api.js b/src/courseware/data/api.js
index 792fb401..69998c29 100644
--- a/src/courseware/data/api.js
+++ b/src/courseware/data/api.js
@@ -16,8 +16,6 @@ export function normalizeBlocks(courseId, blocks) {
     switch (block.type) {
       case 'course':
         models.courses[block.id] = {
-          effortActivities: block.effort_activities,
-          effortTime: block.effort_time,
           id: courseId,
           title: block.display_name,
           sectionIds: block.children || [],
@@ -26,8 +24,6 @@ export function normalizeBlocks(courseId, blocks) {
         break;
       case 'chapter':
         models.sections[block.id] = {
-          effortActivities: block.effort_activities,
-          effortTime: block.effort_time,
           id: block.id,
           title: block.display_name,
           sequenceIds: block.children || [],
diff --git a/src/shared/data/__factories__/courseBlocks.factory.js b/src/shared/data/__factories__/courseBlocks.factory.js
index 24d25a3e..86eefd81 100644
--- a/src/shared/data/__factories__/courseBlocks.factory.js
+++ b/src/shared/data/__factories__/courseBlocks.factory.js
@@ -106,7 +106,12 @@ export function buildSimpleCourseBlocks(courseId, title, options = {}) {
 export function buildMinimalCourseBlocks(courseId, title, options = {}) {
   const sequenceBlocks = options.sequenceBlocks || [Factory.build(
     'block',
-    { display_name: 'Title of Sequence', type: 'sequential' },
+    {
+      display_name: 'Title of Sequence',
+      effort_activities: 2,
+      effort_time: 15,
+      type: 'sequential',
+    },
     { courseId },
   )];
   const sectionBlocks = options.sectionBlocks || [Factory.build(
@@ -115,8 +120,6 @@ export function buildMinimalCourseBlocks(courseId, title, options = {}) {
       type: 'chapter',
       display_name: 'Title of Section',
       complete: options.complete || false,
-      effort_time: 15,
-      effort_activities: 2,
       resume_block: options.resumeBlock || false,
       children: sequenceBlocks.map(block => block.id),
     },
diff --git a/src/shared/effort-estimate/EffortEstimate.jsx b/src/shared/effort-estimate/EffortEstimate.jsx
index 55685006..3a0fae47 100644
--- a/src/shared/effort-estimate/EffortEstimate.jsx
+++ b/src/shared/effort-estimate/EffortEstimate.jsx
@@ -1,9 +1,11 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 import classNames from 'classnames';
+import { FormattedMessage, injectIntl, intlShape } from '@edx/frontend-platform/i18n';
+
+import messages from './messages';
 
 // This component shows an effort estimate provided by the backend block data. Either time, activities, or both.
-// Right now it is an experiment, and AA-659 is its cleanup ticket.
 
 function EffortEstimate(props) {
   const {
@@ -12,27 +14,34 @@ function EffortEstimate(props) {
       effortTime,
     },
     className,
+    intl,
   } = props;
 
-  // FIXME: This is not properly internationalized. This is just an experiment right now, so I chose to not mark
-  // FIXME: the strings for translation. That should be fixed if/when this is made real code. AA-659
   const minuteCount = Math.ceil(effortTime / 60); // effortTime is in seconds
+  const minutesAbbreviated = intl.formatMessage(messages.minutesAbbreviated, { minuteCount });
+  const minutesFull = intl.formatMessage(messages.minutesFull, { minuteCount });
   const minutes = (
     <>
-      {minuteCount}
-      <span aria-hidden="true"> min</span>
-      <span className="sr-only"> {minuteCount === 1 ? 'minute' : 'minutes'}</span>
+      <span aria-hidden="true">{minutesAbbreviated}</span>
+      <span className="sr-only">{minutesFull}</span>
     </>
   );
-  const activities = <>{effortActivities} {effortActivities === 1 ? 'activity' : 'activities'}</>;
+  const activities = intl.formatMessage(messages.activities, { activityCount: effortActivities });
   let content = null;
 
   if (effortTime && effortActivities) {
-    content = <>{minutes} + {activities}</>;
+    content = (
+      <FormattedMessage
+        id="learning.effortEstimation.combinedEstimate"
+        defaultMessage="{minutes} + {activities}"
+        description="You can likely leave this alone, unless you want to use a full width plus or similar change"
+        values={{ activities, minutes }}
+      />
+    );
   } else if (effortTime) {
-    content = <>{minutes}</>;
+    content = minutes;
   } else if (effortActivities) {
-    content = <>{activities}</>;
+    content = activities;
   } else {
     return null;
   }
@@ -57,6 +66,7 @@ EffortEstimate.propTypes = {
     effortTime: PropTypes.number,
   }).isRequired,
   className: PropTypes.string,
+  intl: intlShape.isRequired,
 };
 
-export default EffortEstimate;
+export default injectIntl(EffortEstimate);
diff --git a/src/shared/effort-estimate/messages.js b/src/shared/effort-estimate/messages.js
new file mode 100644
index 00000000..75b544d8
--- /dev/null
+++ b/src/shared/effort-estimate/messages.js
@@ -0,0 +1,20 @@
+import { defineMessages } from '@edx/frontend-platform/i18n';
+
+const messages = defineMessages({
+  activities: {
+    id: 'learning.effortEstimation.activities',
+    defaultMessage: '{activityCount, plural, one {# activity} other {# activities}}',
+  },
+  minutesAbbreviated: {
+    id: 'learning.effortEstimation.minutesAbbreviated',
+    defaultMessage: '{minuteCount, plural, other {# min}}',
+    description: 'Number of minutes in a casual, shorthand manner: 5 min',
+  },
+  minutesFull: {
+    id: 'learning.effortEstimation.minutesFull',
+    defaultMessage: '{minuteCount, plural, one {# minute} other {# minutes}}',
+    description: 'Number of minutes spelled out: 5 minutes',
+  },
+});
+
+export default messages;