diff --git a/CHANGELOG.md b/CHANGELOG.md
index 41a7927..c1f7cdb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -54,3 +54,21 @@ e este projeto adere ao [Semantic Versioning](https://semver.org/lang/pt-BR/).
 
 ### Removido
 - N/A (primeira versão)
+
+## [1.1.0] - 2024-05-20
+
+### Adicionado
+- Novo componente `TextCaseToggle` para alternar entre maiúsculas/minúsculas
+- Componentes de texto adaptativo (`AdaptiveText`, `AdaptiveTitle`, `AdaptiveParagraph`)
+- Hook `useUppercasePreference` para gerenciar preferência do usuário
+- Suporte a texto em maiúsculas para crianças em fase de alfabetização
+
+### Modificado
+- Páginas de histórias e exercícios para usar o novo sistema de texto
+- Cabeçalho das páginas principal com controle de caixa de texto
+- Componentes de exercícios para suportar transformação de texto
+
+### Técnico
+- Adicionada coluna `uppercase_text_preferences` na tabela students
+- Sistema de persistência de preferências via Supabase
+- Otimizações de performance com memoização de componentes
diff --git a/src/pages/student-dashboard/CreateStoryPage.tsx b/src/pages/student-dashboard/CreateStoryPage.tsx
index f81fd43..4c592d1 100644
--- a/src/pages/student-dashboard/CreateStoryPage.tsx
+++ b/src/pages/student-dashboard/CreateStoryPage.tsx
@@ -3,12 +3,17 @@ import { ArrowLeft, Sparkles } from 'lucide-react';
 import { useNavigate } from 'react-router-dom';
 import { StoryGenerator } from '../../components/story/StoryGenerator';
 import { useSession } from '../../hooks/useSession';
+import { TextCaseToggle } from '../../components/ui/text-case-toggle';
+import { AdaptiveTitle, AdaptiveParagraph, AdaptiveText } from '../../components/ui/adaptive-text';
+import { useUppercasePreference } from '../../hooks/useUppercasePreference';
 
 export function CreateStoryPage() {
   const navigate = useNavigate();
   const { session } = useSession();
   const [error, setError] = React.useState<string | null>(null);
 
+  const { isUpperCase, toggleUppercase, isLoading } = useUppercasePreference(session?.user?.id);
+
   if (!session) {
     return (
       <div className="text-center py-12">
@@ -39,11 +44,23 @@ export function CreateStoryPage() {
             <Sparkles className="h-6 w-6 text-purple-600" />
           </div>
           <div>
-            <h1 className="text-2xl font-bold text-gray-900">Criar Nova História</h1>
-            <p className="text-gray-600">
-              Vamos criar uma história personalizada baseada nos seus interesses
-            </p>
+            <AdaptiveTitle
+              text="Criar Nova História"
+              isUpperCase={isUpperCase}
+              className="text-2xl font-bold text-gray-900"
+            />
+            <AdaptiveParagraph
+              text="Vamos criar uma história personalizada baseada nos seus interesses"
+              isUpperCase={isUpperCase}
+              className="text-gray-600"
+            />
           </div>
+          <TextCaseToggle
+            isUpperCase={isUpperCase}
+            onToggle={toggleUppercase}
+            isLoading={isLoading}
+            className="ml-auto"
+          />
         </div>
 
         {error && (
@@ -59,10 +76,19 @@ export function CreateStoryPage() {
             Como funciona?
           </h3>
           <ol className="text-sm text-purple-700 space-y-2">
-            <li>1. Conte-nos sobre seus interesses e preferências</li>
-            <li>2. Escolha personagens e cenários para sua história</li>
-            <li>3. Nossa IA criará uma história única e personalizada</li>
-            <li>4. Você poderá ler e praticar com sua nova história</li>
+            {[
+              'Conte-nos sobre seus interesses e preferências',
+              'Escolha personagens e cenários para sua história',
+              'Nossa IA criará uma história única e personalizada',
+              'Você poderá ler e praticar com sua nova história'
+            ].map((text, index) => (
+              <AdaptiveText
+                key={index}
+                text={`${index + 1}. ${text}`}
+                isUpperCase={isUpperCase}
+                as="li"
+              />
+            ))}
           </ol>
         </div>
       </div>
diff --git a/src/pages/student-dashboard/ExercisePage.tsx b/src/pages/student-dashboard/ExercisePage.tsx
index a219f34..94a9e74 100644
--- a/src/pages/student-dashboard/ExercisePage.tsx
+++ b/src/pages/student-dashboard/ExercisePage.tsx
@@ -5,6 +5,10 @@ import { WordFormation } from '../../components/exercises/WordFormation';
 import { SentenceCompletion } from '../../components/exercises/SentenceCompletion';
 import { PronunciationPractice } from '../../components/exercises/PronunciationPractice';
 import { ArrowLeft } from 'lucide-react';
+import { TextCaseToggle } from '../../components/ui/text-case-toggle';
+import { AdaptiveText, AdaptiveTitle, AdaptiveParagraph } from '../../components/ui/adaptive-text';
+import { useUppercasePreference } from '../../hooks/useUppercasePreference';
+import { useSession } from '../../hooks/useSession';
 
 interface ExerciseWord {
   word: string;
@@ -31,6 +35,8 @@ export function ExercisePage() {
   const [exerciseData, setExerciseData] = React.useState<any>(null);
   const [exerciseWords, setExerciseWords] = React.useState<ExerciseWord[]>([]);
   const [error, setError] = React.useState<string | null>(null);
+  const { session } = useSession();
+  const { isUpperCase, toggleUppercase, isLoading } = useUppercasePreference(session?.user?.id);
   
   React.useEffect(() => {
     const loadExerciseData = async () => {
@@ -136,7 +142,9 @@ export function ExercisePage() {
       case 'word-formation':
         return (
           <WordFormation 
-            words={exerciseWords.map(w => w.word)} 
+            words={exerciseWords.map(w => 
+              isUpperCase ? w.word.toUpperCase() : w.word
+            )}
             storyId={storyId as string}
             studentId={exerciseData.story.student_id}
           />
@@ -170,8 +178,24 @@ export function ExercisePage() {
           className="flex items-center gap-2 text-gray-600 hover:text-gray-900 mb-4"
         >
           <ArrowLeft className="w-5 h-5" />
-          Voltar para história
+          <AdaptiveText
+            text="Voltar para história"
+            isUpperCase={isUpperCase}
+          />
         </button>
+        
+        <div className="flex justify-between items-center">
+          <AdaptiveTitle
+            text={`Exercício: ${type?.replace('-', ' ')}`}
+            isUpperCase={isUpperCase}
+            className="text-xl font-bold"
+          />
+          <TextCaseToggle
+            isUpperCase={isUpperCase}
+            onToggle={toggleUppercase}
+            isLoading={isLoading}
+          />
+        </div>
       </div>
 
       {/* Exercício */}
diff --git a/src/pages/student-dashboard/StoryPage.tsx b/src/pages/student-dashboard/StoryPage.tsx
index 3917d87..a8bcb73 100644
--- a/src/pages/student-dashboard/StoryPage.tsx
+++ b/src/pages/student-dashboard/StoryPage.tsx
@@ -8,6 +8,10 @@ import { StoryMetrics } from '../../components/story/StoryMetrics';
 import { convertWebmToMp3 } from '../../utils/audioConverter';
 import * as Dialog from '@radix-ui/react-dialog';
 import { ExerciseSuggestions } from '../../components/learning/ExerciseSuggestions';
+import { TextCaseToggle } from '../../components/ui/text-case-toggle';
+import { AdaptiveText, AdaptiveTitle, AdaptiveParagraph } from '../../components/ui/adaptive-text';
+import { useUppercasePreference } from '../../hooks/useUppercasePreference';
+import { useSession } from '../../hooks/useSession';
 
 interface StoryRecording {
   id: string;
@@ -385,6 +389,8 @@ export function StoryPage() {
   const [loadingRecordings, setLoadingRecordings] = React.useState(true);
   const [showDeleteModal, setShowDeleteModal] = useState(false);
   const [isDeleting, setIsDeleting] = useState(false);
+  const { session } = useSession();
+  const { isUpperCase, toggleUppercase, isLoading } = useUppercasePreference(session?.user?.id);
 
   React.useEffect(() => {
     const fetchStory = async () => {
@@ -602,10 +608,15 @@ export function StoryPage() {
           className="flex items-center gap-2 text-gray-600 hover:text-gray-900"
         >
           <ArrowLeft className="h-5 w-5" />
-          Voltar para histórias
+          <AdaptiveText text="Voltar para histórias" isUpperCase={isUpperCase} />
         </button>
 
         <div className="flex items-center gap-4">
+          <TextCaseToggle
+            isUpperCase={isUpperCase}
+            onToggle={toggleUppercase}
+            isLoading={isLoading}
+          />
           <button
             onClick={handleShare}
             className="flex items-center gap-2 px-4 py-2 text-gray-600 hover:text-gray-900"
@@ -635,12 +646,18 @@ export function StoryPage() {
         )}
 
         <div className="p-8">
-          <h1 className="text-3xl font-bold text-gray-900 mb-6">{story?.title}</h1>
+          <AdaptiveTitle
+            text={story?.title || ''}
+            isUpperCase={isUpperCase}
+            className="text-3xl font-bold text-gray-900 mb-6"
+          />
           
           {/* Texto da página atual */}
-          <p className="text-xl leading-relaxed text-gray-700 mb-8">
-            {story?.content?.pages?.[currentPage]?.text || 'Carregando...'}
-          </p>
+          <AdaptiveParagraph
+            text={story?.content?.pages?.[currentPage]?.text || 'Carregando...'}
+            isUpperCase={isUpperCase}
+            className="text-xl leading-relaxed text-gray-700 mb-8"
+          />
 
           {/* Gravador de áudio */}
           <AudioRecorder
diff --git a/src/pages/student-dashboard/StudentDashboardLayout.tsx b/src/pages/student-dashboard/StudentDashboardLayout.tsx
index 9b51484..c37231e 100644
--- a/src/pages/student-dashboard/StudentDashboardLayout.tsx
+++ b/src/pages/student-dashboard/StudentDashboardLayout.tsx
@@ -64,7 +64,7 @@ export function StudentDashboardLayout() {
         {!isCollapsed && <span>Minhas Histórias</span>}
       </NavLink>
 
-      <NavLink
+      {/* <NavLink
         to="/aluno/conquistas"
         onClick={handleNavigation}
         className={({ isActive }) =>