diff --git a/src/Vocup.Core/Models/BookPracticeState.cs b/src/Vocup.Core/Models/BookPracticeState.cs
new file mode 100644
index 0000000..875a134
--- /dev/null
+++ b/src/Vocup.Core/Models/BookPracticeState.cs
@@ -0,0 +1,34 @@
+using DynamicData;
+using DynamicData.Binding;
+using ReactiveUI;
+using ReactiveUI.Fody.Helpers;
+using System;
+using Vocup.Settings;
+
+namespace Vocup.Models;
+
+public class BookPracticeState : ReactiveObject
+{
+    private readonly IObservableList<PracticeState> practiceStates;
+
+    public BookPracticeState(Book book, IVocupSettings settings)
+    {
+        book.Words.ToObservableChangeSet()
+            .AutoRefresh(word => word.ForeignLanguagePracticeState)
+            .AutoRefresh(word => word.MotherTonguePracticeState)
+            .AutoRefreshOnObservable(_ => book.WhenAnyValue(x => x.PracticeMode))
+            .AutoRefreshOnObservable(_ => settings.WhenAnyValue(x => x.MaxPracticeCount))
+            .Transform(word => book.PracticeMode != PracticeMode.AskForMotherTongue ? word.ForeignLanguagePracticeState : word.MotherTonguePracticeState)
+            .Transform(practiceStateNumber => PracticeStateHelper.Parse(practiceStateNumber, settings.MaxPracticeCount))
+            .BindToObservableList(out practiceStates)
+            .Subscribe();
+    }
+
+    public WordPracticeState this[Word word] => null;
+
+    [ObservableAsProperty] public int Unpracticed { get; }
+    [ObservableAsProperty] public int WronglyPracticed { get; }
+    [ObservableAsProperty] public int CorrectlyPracticed { get; }
+    [ObservableAsProperty] public int FullyPracticed { get; }
+    [ObservableAsProperty] public int NotFullyPracticed { get; }
+}
diff --git a/src/Vocup.Core/Models/Word.cs b/src/Vocup.Core/Models/Word.cs
index bbd6f25..e61aa83 100644
--- a/src/Vocup.Core/Models/Word.cs
+++ b/src/Vocup.Core/Models/Word.cs
@@ -75,7 +75,13 @@ public override int GetHashCode()
         return HashCode.Combine(CreationDate, MotherTongue, ForeignLanguage);
     }
 
+    /// <summary>
+    /// A comma separated list of mother tongue synonyms
+    /// </summary>
     public string MotherTongueCombined => motherTongueCombined.Value;
+    /// <summary>
+    /// A comma separated list of foreign language synonyms
+    /// </summary>
     public string ForeignLanguageCombined => foreignLanguageCombined.Value;
     public int MotherTonguePracticeState => motherTonguePracticeState.Value;
     public int ForeignLanguagePracticeState => foreignLanguagePracticeState.Value;
diff --git a/src/Vocup.Core/Models/WordPracticeState.cs b/src/Vocup.Core/Models/WordPracticeState.cs
new file mode 100644
index 0000000..e7159c1
--- /dev/null
+++ b/src/Vocup.Core/Models/WordPracticeState.cs
@@ -0,0 +1,25 @@
+using ReactiveUI;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Reactive.Linq;
+using Vocup.Settings;
+
+namespace Vocup.Models;
+
+public class WordPracticeState : ReactiveObject
+{
+    public WordPracticeState(Book book, Word word, IVocupSettings settings)
+    {
+        book.WhenAnyValue(x => x.PracticeMode)
+            .Select(practiceMode => practiceMode != PracticeMode.AskForMotherTongue ? word.ForeignLanguage : word.MotherTongue);
+
+        //PracticeState = Reactive(() =>
+        //{
+        //    ObservableCollection<Synonym> synonyms = book.PracticeMode != PracticeMode.AskForMotherTongue ? word.ForeignLanguage : word.MotherTongue;
+        //    int practiceStateNumber = synonyms.MaxBy(synonym => synonym.PracticeState)?.PracticeState ?? 0;
+        //    return PracticeStateHelper.Parse(practiceStateNumber, settings.MaxPracticeCount);
+        //});
+    }
+
+    PracticeState PracticeState { get; }
+}
diff --git a/src/Vocup/Models/VocabularyWordController.cs b/src/Vocup/Models/VocabularyWordController.cs
index 77edbbd..3dc15e7 100644
--- a/src/Vocup/Models/VocabularyWordController.cs
+++ b/src/Vocup/Models/VocabularyWordController.cs
@@ -17,7 +17,7 @@ public VocabularyWordController(Word vocabularyWord)
             praticeDateColumn = ListViewItem.SubItems.Add(new ListViewItem.ListViewSubItem(ListViewItem, ""));
 
             VocabularyWord = vocabularyWord;
-            VocabularyWord.PropertyChanged += (a0, a1) => UpdateUI();
+            VocabularyWord.PropertyChanged += (_, _) => UpdateUI();
             UpdateUI();
         }