diff --git a/src/addon/mod/lesson/lesson.module.ts b/src/addon/mod/lesson/lesson.module.ts
index 40da3d1f9..27972cf62 100644
--- a/src/addon/mod/lesson/lesson.module.ts
+++ b/src/addon/mod/lesson/lesson.module.ts
@@ -13,17 +13,51 @@
 // limitations under the License.
 
 import { NgModule } from '@angular/core';
+import { CoreCronDelegate } from '@providers/cron';
+import { CoreCourseModuleDelegate } from '@core/course/providers/module-delegate';
+import { CoreCourseModulePrefetchDelegate } from '@core/course/providers/module-prefetch-delegate';
+import { CoreContentLinksDelegate } from '@core/contentlinks/providers/delegate';
+import { AddonModLessonComponentsModule } from './components/components.module';
 import { AddonModLessonProvider } from './providers/lesson';
 import { AddonModLessonOfflineProvider } from './providers/lesson-offline';
+import { AddonModLessonSyncProvider } from './providers/lesson-sync';
+import { AddonModLessonModuleHandler } from './providers/module-handler';
+import { AddonModLessonPrefetchHandler } from './providers/prefetch-handler';
+import { AddonModLessonSyncCronHandler } from './providers/sync-cron-handler';
+import { AddonModLessonIndexLinkHandler } from './providers/index-link-handler';
+import { AddonModLessonGradeLinkHandler } from './providers/grade-link-handler';
+import { AddonModLessonReportLinkHandler } from './providers/report-link-handler';
 
 @NgModule({
     declarations: [
     ],
     imports: [
+        AddonModLessonComponentsModule
     ],
     providers: [
         AddonModLessonProvider,
-        AddonModLessonOfflineProvider
+        AddonModLessonOfflineProvider,
+        AddonModLessonSyncProvider,
+        AddonModLessonModuleHandler,
+        AddonModLessonPrefetchHandler,
+        AddonModLessonSyncCronHandler,
+        AddonModLessonIndexLinkHandler,
+        AddonModLessonGradeLinkHandler,
+        AddonModLessonReportLinkHandler
     ]
 })
-export class AddonModLessonModule { }
+export class AddonModLessonModule {
+    constructor(moduleDelegate: CoreCourseModuleDelegate, moduleHandler: AddonModLessonModuleHandler,
+            prefetchDelegate: CoreCourseModulePrefetchDelegate, prefetchHandler: AddonModLessonPrefetchHandler,
+            cronDelegate: CoreCronDelegate, syncHandler: AddonModLessonSyncCronHandler, linksDelegate: CoreContentLinksDelegate,
+            indexHandler: AddonModLessonIndexLinkHandler, gradeHandler: AddonModLessonGradeLinkHandler,
+            reportHandler: AddonModLessonReportLinkHandler) {
+
+        moduleDelegate.registerHandler(moduleHandler);
+        prefetchDelegate.registerHandler(prefetchHandler);
+        cronDelegate.register(syncHandler);
+        linksDelegate.registerHandler(indexHandler);
+        linksDelegate.registerHandler(gradeHandler);
+        linksDelegate.registerHandler(reportHandler);
+    }
+}
diff --git a/src/addon/mod/lesson/providers/grade-link-handler.ts b/src/addon/mod/lesson/providers/grade-link-handler.ts
new file mode 100644
index 000000000..f71c50586
--- /dev/null
+++ b/src/addon/mod/lesson/providers/grade-link-handler.ts
@@ -0,0 +1,95 @@
+// (C) Copyright 2015 Martin Dougiamas
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { Injectable } from '@angular/core';
+import { NavController } from 'ionic-angular';
+import { CoreSitesProvider } from '@providers/sites';
+import { CoreDomUtilsProvider } from '@providers/utils/dom';
+import { CoreContentLinksModuleGradeHandler } from '@core/contentlinks/classes/module-grade-handler';
+import { CoreContentLinksHelperProvider } from '@core/contentlinks/providers/helper';
+import { CoreCourseProvider } from '@core/course/providers/course';
+import { CoreCourseHelperProvider } from '@core/course/providers/helper';
+import { AddonModLessonProvider } from './lesson';
+
+/**
+ * Handler to treat links to lesson grade.
+ */
+@Injectable()
+export class AddonModLessonGradeLinkHandler extends CoreContentLinksModuleGradeHandler {
+    name = 'AddonModLessonGradeLinkHandler';
+    canReview = true;
+
+    constructor(courseHelper: CoreCourseHelperProvider, domUtils: CoreDomUtilsProvider, sitesProvider: CoreSitesProvider,
+            protected lessonProvider: AddonModLessonProvider, protected courseProvider: CoreCourseProvider,
+            protected linkHelper: CoreContentLinksHelperProvider) {
+        super(courseHelper, domUtils, sitesProvider, 'AddonModLesson', 'lesson');
+    }
+
+    /**
+     * Go to the page to review.
+     *
+     * @param {string} url The URL to treat.
+     * @param {any} params The params of the URL. E.g. 'mysite.com?id=1' -> {id: 1}
+     * @param {number} courseId Course ID related to the URL.
+     * @param {string} siteId Site to use.
+     * @param {NavController} [navCtrl] Nav Controller to use to navigate.
+     * @return {Promise<any>} Promise resolved when done.
+     */
+    protected goToReview(url: string, params: any, courseId: number, siteId: string, navCtrl?: NavController): Promise<any> {
+
+        const moduleId = parseInt(params.id, 10),
+            modal = this.domUtils.showModalLoading();
+        let module;
+
+        return this.courseProvider.getModuleBasicInfo(moduleId, siteId).then((mod) => {
+            module = mod;
+            courseId = module.course || courseId || params.courseid || params.cid;
+
+            // Check if the user can see the user reports in the lesson.
+            return this.lessonProvider.getAccessInformation(module.instance);
+        }).then((info) => {
+            if (info.canviewreports) {
+                // User can view reports, go to view the report.
+                const pageParams = {
+                    courseId: Number(courseId),
+                    lessonId: module.instance,
+                    userId: parseInt(params.userid, 10)
+                };
+
+                this.linkHelper.goInSite(navCtrl, 'AddonModLessonUserRetakePage', pageParams, siteId);
+            } else {
+                // User cannot view the report, go to lesson index.
+                this.courseHelper.navigateToModule(moduleId, siteId, courseId, module.section);
+            }
+        }).catch((error) => {
+            this.domUtils.showErrorModalDefault(error, 'core.course.errorgetmodule', true);
+        }).finally(() => {
+            modal.dismiss();
+        });
+    }
+
+    /**
+     * Check if the handler is enabled for a certain site (site + user) and a URL.
+     * If not defined, defaults to true.
+     *
+     * @param {string} siteId The site ID.
+     * @param {string} url The URL to treat.
+     * @param {any} params The params of the URL. E.g. 'mysite.com?id=1' -> {id: 1}
+     * @param {number} [courseId] Course ID related to the URL. Optional but recommended.
+     * @return {boolean|Promise<boolean>} Whether the handler is enabled for the URL and site.
+     */
+    isEnabled(siteId: string, url: string, params: any, courseId?: number): boolean | Promise<boolean> {
+        return this.lessonProvider.isPluginEnabled();
+    }
+}
diff --git a/src/addon/mod/lesson/providers/index-link-handler.ts b/src/addon/mod/lesson/providers/index-link-handler.ts
new file mode 100644
index 000000000..244c55fcd
--- /dev/null
+++ b/src/addon/mod/lesson/providers/index-link-handler.ts
@@ -0,0 +1,105 @@
+// (C) Copyright 2015 Martin Dougiamas
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { Injectable } from '@angular/core';
+import { CoreDomUtilsProvider } from '@providers/utils/dom';
+import { CoreContentLinksModuleIndexHandler } from '@core/contentlinks/classes/module-index-handler';
+import { CoreContentLinksAction } from '@core/contentlinks/providers/delegate';
+import { CoreCourseProvider } from '@core/course/providers/course';
+import { CoreCourseHelperProvider } from '@core/course/providers/helper';
+import { AddonModLessonProvider } from './lesson';
+
+/**
+ * Handler to treat links to lesson index.
+ */
+@Injectable()
+export class AddonModLessonIndexLinkHandler extends CoreContentLinksModuleIndexHandler {
+    name = 'AddonModLessonIndexLinkHandler';
+
+    constructor(courseHelper: CoreCourseHelperProvider, protected lessonProvider: AddonModLessonProvider,
+            protected domUtils: CoreDomUtilsProvider, protected courseProvider: CoreCourseProvider) {
+        super(courseHelper, 'AddonModLesson', 'lesson');
+    }
+
+    /**
+     * Get the list of actions for a link (url).
+     *
+     * @param {string[]} siteIds List of sites the URL belongs to.
+     * @param {string} url The URL to treat.
+     * @param {any} params The params of the URL. E.g. 'mysite.com?id=1' -> {id: 1}
+     * @param {number} [courseId] Course ID related to the URL. Optional but recommended.
+     * @return {CoreContentLinksAction[]|Promise<CoreContentLinksAction[]>} List of (or promise resolved with list of) actions.
+     */
+    getActions(siteIds: string[], url: string, params: any, courseId?: number):
+            CoreContentLinksAction[] | Promise<CoreContentLinksAction[]> {
+
+        courseId = courseId || params.courseid || params.cid;
+
+        return [{
+            action: (siteId, navCtrl?): void => {
+                /* Ignore the pageid param. If we open the lesson player with a certain page and the user hasn't started
+                   the lesson, an error is thrown: could not find lesson_timer records. */
+                if (params.userpassword) {
+                    this.navigateToModuleWithPassword(parseInt(params.id, 10), courseId, params.userpassword, siteId);
+                } else {
+                    this.courseHelper.navigateToModule(parseInt(params.id, 10), siteId, courseId);
+                }
+            }
+        }];
+    }
+
+    /**
+     * Check if the handler is enabled for a certain site (site + user) and a URL.
+     * If not defined, defaults to true.
+     *
+     * @param {string} siteId The site ID.
+     * @param {string} url The URL to treat.
+     * @param {any} params The params of the URL. E.g. 'mysite.com?id=1' -> {id: 1}
+     * @param {number} [courseId] Course ID related to the URL. Optional but recommended.
+     * @return {boolean|Promise<boolean>} Whether the handler is enabled for the URL and site.
+     */
+    isEnabled(siteId: string, url: string, params: any, courseId?: number): boolean | Promise<boolean> {
+        return this.lessonProvider.isPluginEnabled();
+    }
+
+    /**
+     * Navigate to a lesson module (index page) with a fixed password.
+     *
+     * @param {number} moduleId Module ID.
+     * @param {number} courseId Course ID.
+     * @param {string} password Password.
+     * @param {string} siteId Site ID.
+     * @return {Promise<any>} Promise resolved when navigated.
+     */
+    protected navigateToModuleWithPassword(moduleId: number, courseId: number, password: string, siteId: string): Promise<any> {
+        const modal = this.domUtils.showModalLoading();
+
+        // Get the module.
+        return this.courseProvider.getModuleBasicInfo(moduleId, siteId).then((module) => {
+            courseId = courseId || module.course;
+
+            // Store the password so it's automatically used.
+            return this.lessonProvider.storePassword(parseInt(module.instance, 10), password, siteId).catch(() => {
+                // Ignore errors.
+            }).then(() => {
+                return this.courseHelper.navigateToModule(moduleId, siteId, courseId, module.section);
+            });
+        }).catch(() => {
+            // Error, go to index page.
+            return this.courseHelper.navigateToModule(moduleId, siteId, courseId);
+        }).finally(() => {
+            modal.dismiss();
+        });
+    }
+}
diff --git a/src/addon/mod/lesson/providers/module-handler.ts b/src/addon/mod/lesson/providers/module-handler.ts
new file mode 100644
index 000000000..6ff5f57f2
--- /dev/null
+++ b/src/addon/mod/lesson/providers/module-handler.ts
@@ -0,0 +1,72 @@
+// (C) Copyright 2015 Martin Dougiamas
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { Injectable } from '@angular/core';
+import { NavController, NavOptions } from 'ionic-angular';
+import { AddonModLessonIndexComponent } from '../components/index/index';
+import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@core/course/providers/module-delegate';
+import { CoreCourseProvider } from '@core/course/providers/course';
+import { AddonModLessonProvider } from './lesson';
+
+/**
+ * Handler to support quiz modules.
+ */
+@Injectable()
+export class AddonModLessonModuleHandler implements CoreCourseModuleHandler {
+    name = 'AddonModLesson';
+    modName = 'lesson';
+
+    constructor(private courseProvider: CoreCourseProvider, private lessonProvider: AddonModLessonProvider) { }
+
+    /**
+     * Check if the handler is enabled on a site level.
+     *
+     * @return {Promise<boolean>} Promise resolved with boolean: whether or not the handler is enabled on a site level.
+     */
+    isEnabled(): Promise<boolean> {
+        return this.lessonProvider.isPluginEnabled();
+    }
+
+    /**
+     * Get the data required to display the module in the course contents view.
+     *
+     * @param {any} module The module object.
+     * @param {number} courseId The course ID.
+     * @param {number} sectionId The section ID.
+     * @return {CoreCourseModuleHandlerData} Data to render the module.
+     */
+    getData(module: any, courseId: number, sectionId: number): CoreCourseModuleHandlerData {
+        return {
+            icon: this.courseProvider.getModuleIconSrc('lesson'),
+            title: module.name,
+            class: 'addon-mod_lesson-handler',
+            showDownloadButton: true,
+            action(event: Event, navCtrl: NavController, module: any, courseId: number, options: NavOptions): void {
+                navCtrl.push('AddonModLessonIndexPage', {module: module, courseId: courseId}, options);
+            }
+        };
+    }
+
+    /**
+     * Get the component to render the module. This is needed to support singleactivity course format.
+     * The component returned must implement CoreCourseModuleMainComponent.
+     *
+     * @param {any} course The course object.
+     * @param {any} module The module object.
+     * @return {any} The component to use, undefined if not found.
+     */
+    getMainComponent(course: any, module: any): any {
+        return AddonModLessonIndexComponent;
+    }
+}
diff --git a/src/addon/mod/lesson/providers/report-link-handler.ts b/src/addon/mod/lesson/providers/report-link-handler.ts
new file mode 100644
index 000000000..e07c9978c
--- /dev/null
+++ b/src/addon/mod/lesson/providers/report-link-handler.ts
@@ -0,0 +1,154 @@
+// (C) Copyright 2015 Martin Dougiamas
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { Injectable } from '@angular/core';
+import { NavController } from 'ionic-angular';
+import { CoreDomUtilsProvider } from '@providers/utils/dom';
+import { CoreContentLinksHandlerBase } from '@core/contentlinks/classes/base-handler';
+import { CoreContentLinksAction } from '@core/contentlinks/providers/delegate';
+import { CoreContentLinksHelperProvider } from '@core/contentlinks/providers/helper';
+import { CoreCourseProvider } from '@core/course/providers/course';
+import { CoreCourseHelperProvider } from '@core/course/providers/helper';
+import { AddonModLessonProvider } from './lesson';
+
+/**
+ * Handler to treat links to lesson report.
+ */
+@Injectable()
+export class AddonModLessonReportLinkHandler extends CoreContentLinksHandlerBase {
+    name = 'AddonModLessonReportLinkHandler';
+    featureName = 'CoreCourseModuleDelegate_AddonModLesson';
+    pattern = /\/mod\/lesson\/report\.php.*([\&\?]id=\d+)/;
+
+    constructor(protected domUtils: CoreDomUtilsProvider, protected lessonProvider: AddonModLessonProvider,
+            protected courseHelper: CoreCourseHelperProvider, protected linkHelper: CoreContentLinksHelperProvider,
+            protected courseProvider: CoreCourseProvider) {
+        super();
+    }
+
+    /**
+     * Get the list of actions for a link (url).
+     *
+     * @param {string[]} siteIds List of sites the URL belongs to.
+     * @param {string} url The URL to treat.
+     * @param {any} params The params of the URL. E.g. 'mysite.com?id=1' -> {id: 1}
+     * @param {number} [courseId] Course ID related to the URL. Optional but recommended.
+     * @return {CoreContentLinksAction[]|Promise<CoreContentLinksAction[]>} List of (or promise resolved with list of) actions.
+     */
+    getActions(siteIds: string[], url: string, params: any, courseId?: number):
+            CoreContentLinksAction[] | Promise<CoreContentLinksAction[]> {
+        courseId = courseId || params.courseid || params.cid;
+
+        return [{
+            action: (siteId, navCtrl?): void => {
+                if (!params.action || params.action == 'reportoverview') {
+                    // Go to overview.
+                    this.openReportOverview(parseInt(params.id, 10), courseId, parseInt(params.group, 10), siteId, navCtrl);
+                } else if (params.action == 'reportdetail') {
+                    this.openUserRetake(parseInt(params.id, 10), parseInt(params.userid, 10), courseId, parseInt(params.try, 10),
+                            siteId, navCtrl);
+                }
+            }
+        }];
+    }
+
+    /**
+     * Check if the handler is enabled for a certain site (site + user) and a URL.
+     * If not defined, defaults to true.
+     *
+     * @param {string} siteId The site ID.
+     * @param {string} url The URL to treat.
+     * @param {any} params The params of the URL. E.g. 'mysite.com?id=1' -> {id: 1}
+     * @param {number} [courseId] Course ID related to the URL. Optional but recommended.
+     * @return {boolean|Promise<boolean>} Whether the handler is enabled for the URL and site.
+     */
+    isEnabled(siteId: string, url: string, params: any, courseId?: number): boolean | Promise<boolean> {
+        if (params.action == 'reportdetail' && !params.userid) {
+            // Individual details are only available if the teacher is seeing a certain user.
+            return false;
+        }
+
+        return this.lessonProvider.isPluginEnabled();
+    }
+
+    /**
+     * Open report overview.
+     *
+     * @param {number} moduleId Module ID.
+     * @param {number} courseId Course ID.
+     * @param {string} groupId Group ID.
+     * @param {string} siteId Site ID.
+     * @param {NavController} [navCtrl] The NavController to use to navigate.
+     * @return {Promise<any>} Promise resolved when done.
+     */
+    protected openReportOverview(moduleId: number, courseId?: number, groupId?: number, siteId?: string, navCtrl?: NavController)
+            : Promise<any> {
+
+        const modal = this.domUtils.showModalLoading();
+
+        // Get the module object.
+        return this.courseProvider.getModuleBasicInfo(moduleId, siteId).then((module) => {
+            courseId = courseId || module.course;
+
+            const pageParams = {
+                module: module,
+                courseId: Number(courseId),
+                action: 'report',
+                group: groupId
+            };
+
+            this.linkHelper.goInSite(navCtrl, 'AddonModLessonIndexPage', pageParams, siteId);
+        }).catch((error) => {
+            this.domUtils.showErrorModalDefault(error, 'Error processing link.');
+        }).finally(() => {
+            modal.dismiss();
+        });
+    }
+
+    /**
+     * Open a user's retake.
+     *
+     * @param {number} moduleId Module ID.
+     * @param {number} userId User ID.
+     * @param {number} courseId Course ID.
+     * @param {number} retake Retake to open.
+     * @param {string} groupId Group ID.
+     * @param {string} siteId Site ID.
+     * @param {NavController} [navCtrl] The NavController to use to navigate.
+     * @return {Promise<any>} Promise resolved when done.
+     */
+    protected openUserRetake(moduleId: number, userId: number, courseId: number, retake: number, siteId: string,
+            navCtrl?: NavController): Promise<any> {
+
+        const modal = this.domUtils.showModalLoading();
+
+        // Get the module object.
+        return this.courseProvider.getModuleBasicInfo(moduleId, siteId).then((module) => {
+            courseId = courseId || module.course;
+
+            const pageParams = {
+                lessonId: module.instance,
+                courseId: Number(courseId),
+                userId: userId,
+                retake: retake || 0
+            };
+
+            this.linkHelper.goInSite(navCtrl, 'AddonModLessonUserRetakePage', pageParams, siteId);
+        }).catch((error) => {
+            this.domUtils.showErrorModalDefault(error, 'Error processing link.');
+        }).finally(() => {
+            modal.dismiss();
+        });
+    }
+}
diff --git a/src/addon/mod/lesson/providers/sync-cron-handler.ts b/src/addon/mod/lesson/providers/sync-cron-handler.ts
new file mode 100644
index 000000000..a88968db2
--- /dev/null
+++ b/src/addon/mod/lesson/providers/sync-cron-handler.ts
@@ -0,0 +1,47 @@
+// (C) Copyright 2015 Martin Dougiamas
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { Injectable } from '@angular/core';
+import { CoreCronHandler } from '@providers/cron';
+import { AddonModLessonSyncProvider } from './lesson-sync';
+
+/**
+ * Synchronization cron handler.
+ */
+@Injectable()
+export class AddonModLessonSyncCronHandler implements CoreCronHandler {
+    name = 'AddonModLessonSyncCronHandler';
+
+    constructor(private lessonSync: AddonModLessonSyncProvider) {}
+
+    /**
+     * Execute the process.
+     * Receives the ID of the site affected, undefined for all sites.
+     *
+     * @param  {string} [siteId] ID of the site affected, undefined for all sites.
+     * @return {Promise<any>}         Promise resolved when done, rejected if failure.
+     */
+    execute(siteId?: string): Promise<any> {
+        return this.lessonSync.syncAllLessons(siteId);
+    }
+
+    /**
+     * Get the time between consecutive executions.
+     *
+     * @return {number} Time between consecutive executions (in ms).
+     */
+    getInterval(): number {
+        return 600000;
+    }
+}
diff --git a/src/app/app.module.ts b/src/app/app.module.ts
index 0d21aa600..caf403c06 100644
--- a/src/app/app.module.ts
+++ b/src/app/app.module.ts
@@ -88,6 +88,7 @@ import { AddonModFeedbackModule } from '@addon/mod/feedback/feedback.module';
 import { AddonModFolderModule } from '@addon/mod/folder/folder.module';
 import { AddonModForumModule } from '@addon/mod/forum/forum.module';
 import { AddonModGlossaryModule } from '@addon/mod/glossary/glossary.module';
+import { AddonModLessonModule } from '@addon/mod/lesson/lesson.module';
 import { AddonModPageModule } from '@addon/mod/page/page.module';
 import { AddonModQuizModule } from '@addon/mod/quiz/quiz.module';
 import { AddonModScormModule } from '@addon/mod/scorm/scorm.module';
@@ -186,6 +187,7 @@ export const CORE_PROVIDERS: any[] = [
         AddonModChatModule,
         AddonModChoiceModule,
         AddonModLabelModule,
+        AddonModLessonModule,
         AddonModResourceModule,
         AddonModFeedbackModule,
         AddonModFolderModule,
diff --git a/src/core/course/providers/helper.ts b/src/core/course/providers/helper.ts
index e55e9e287..79902b65b 100644
--- a/src/core/course/providers/helper.ts
+++ b/src/core/course/providers/helper.ts
@@ -908,6 +908,10 @@ export class CoreCourseHelperProvider {
         }
 
         return promise.then(() => {
+            // Make sure they're numbers.
+            courseId = Number(courseId);
+            sectionId = Number(sectionId);
+
             // Get the site.
             return this.sitesProvider.getSite(siteId);
         }).then((s) => {