diff --git a/src/aria/accordion/accordion.ts b/src/aria/accordion/accordion.ts
index 0d456bac4d3a..76f3d792baf1 100644
--- a/src/aria/accordion/accordion.ts
+++ b/src/aria/accordion/accordion.ts
@@ -47,7 +47,7 @@ import {
     'role': 'region',
     '[attr.id]': '_pattern.id()',
     '[attr.aria-labelledby]': '_pattern.accordionTrigger()?.id()',
-    '[attr.inert]': '_pattern.hidden() ? true : null',
+    '[attr.inert]': '!visible() ? true : null',
   },
 })
 export class AccordionPanel {
@@ -60,6 +60,9 @@ export class AccordionPanel {
   /** A local unique identifier for the panel, used to match with its trigger's value. */
   value = input.required<string>();
 
+  /** Whether the accordion panel is visible. True if the associated trigger is expanded. */
+  readonly visible = computed(() => !this._pattern.hidden());
+
   /** The parent accordion trigger pattern that controls this panel. This is set by AccordionGroup. */
   readonly accordionTrigger: WritableSignal<AccordionTriggerPattern | undefined> =
     signal(undefined);
@@ -74,7 +77,7 @@ export class AccordionPanel {
   constructor() {
     // Connect the panel's hidden state to the DeferredContentAware's visibility.
     afterRenderEffect(() => {
-      this._deferredContentAware.contentVisible.set(!this._pattern.hidden());
+      this._deferredContentAware.contentVisible.set(this.visible());
     });
   }
 }
@@ -88,10 +91,10 @@ export class AccordionPanel {
   exportAs: 'ngAccordionTrigger',
   host: {
     'class': 'ng-accordion-trigger',
-    '[attr.data-active]': '_pattern.active()',
+    '[attr.data-active]': 'active()',
     'role': 'button',
     '[id]': '_pattern.id()',
-    '[attr.aria-expanded]': '_pattern.expanded()',
+    '[attr.aria-expanded]': 'expanded()',
     '[attr.aria-controls]': '_pattern.controls()',
     '[attr.aria-disabled]': '_pattern.disabled()',
     '[attr.disabled]': 'hardDisabled() ? true : null',
@@ -117,6 +120,12 @@ export class AccordionTrigger {
   /** Whether the trigger is disabled. */
   disabled = input(false, {transform: booleanAttribute});
 
+  /** Whether the trigger is active. */
+  readonly active = computed(() => this._pattern.active());
+
+  /** Whether the trigger is expanded. */
+  readonly expanded = computed(() => this._pattern.expanded());
+
   /**
    * Whether this trigger is completely inaccessible.
    *
diff --git a/src/aria/combobox/combobox.ts b/src/aria/combobox/combobox.ts
index e583db721c60..33883634e3de 100644
--- a/src/aria/combobox/combobox.ts
+++ b/src/aria/combobox/combobox.ts
@@ -86,6 +86,9 @@ export class Combobox<V> {
   /** Whether the combobox is expanded. */
   readonly expanded = computed(() => this._pattern.expanded());
 
+  /** The currently highlighted item in the combobox. */
+  readonly highlightedItem = computed(() => this._pattern.highlightedItem());
+
   /** Input element connected to the combobox, if any. */
   readonly inputElement = computed(() => this._pattern.inputs.inputEl());
 
diff --git a/src/aria/grid/grid.ts b/src/aria/grid/grid.ts
index 91f5148ff71a..3ca68b621d70 100644
--- a/src/aria/grid/grid.ts
+++ b/src/aria/grid/grid.ts
@@ -77,6 +77,21 @@ export class Grid {
   /** The wrapping behavior for keyboard navigation along the column axis. */
   readonly colWrap = input<'continuous' | 'loop' | 'nowrap'>('loop');
 
+  /** Whether multiple cells in the grid can be selected. */
+  readonly multi = input(false, {transform: booleanAttribute});
+
+  /** The selection strategy used by the grid. */
+  readonly selectionMode = input<'follow' | 'explicit'>('follow');
+
+  /** Whether enable range selections (with modifier keys or dragging). */
+  readonly enableRangeSelection = input(false, {transform: booleanAttribute});
+
+  /** Whether the user is currently dragging to select a range of cells. */
+  readonly dragging = computed(() => this._pattern.dragging());
+
+  /** Whether the focus is in the grid. */
+  readonly isFocused = computed(() => this._pattern.isFocused());
+
   /** The UI pattern for the grid. */
   readonly _pattern = new GridPattern({
     ...this,
diff --git a/src/aria/menu/menu.ts b/src/aria/menu/menu.ts
index 062a6487d208..92cbf63413d1 100644
--- a/src/aria/menu/menu.ts
+++ b/src/aria/menu/menu.ts
@@ -45,9 +45,9 @@ import {Directionality} from '@angular/cdk/bidi';
   exportAs: 'ngMenuTrigger',
   host: {
     'class': 'ng-menu-trigger',
-    '[attr.tabindex]': '_pattern.tabindex()',
-    '[attr.aria-haspopup]': '_pattern.hasPopup()',
-    '[attr.aria-expanded]': '_pattern.expanded()',
+    '[attr.tabindex]': '_pattern.tabIndex()',
+    '[attr.aria-haspopup]': 'hasPopup()',
+    '[attr.aria-expanded]': 'expanded()',
     '[attr.aria-controls]': '_pattern.menu()?.id()',
     '(click)': '_pattern.onClick()',
     '(keydown)': '_pattern.onKeydown($event)',
@@ -70,6 +70,12 @@ export class MenuTrigger<V> {
   /** Whether the menu item has been focused. */
   readonly hasBeenFocused = signal(false);
 
+  /** Whether the menu is expanded. */
+  readonly expanded = computed(() => this._pattern.expanded());
+
+  /** Whether the menu trigger has a popup. */
+  readonly hasPopup = computed(() => this._pattern.hasPopup());
+
   /** The menu trigger ui pattern instance. */
   _pattern: MenuTriggerPattern<V> = new MenuTriggerPattern({
     element: computed(() => this._elementRef.nativeElement),
@@ -109,7 +115,7 @@ export class MenuTrigger<V> {
     'role': 'menu',
     'class': 'ng-menu',
     '[attr.id]': '_pattern.id()',
-    '[attr.data-visible]': '_pattern.isVisible()',
+    '[attr.data-visible]': 'isVisible()',
     '(keydown)': '_pattern.onKeydown($event)',
     '(mouseover)': '_pattern.onMouseOver($event)',
     '(mouseout)': '_pattern.onMouseOut($event)',
@@ -174,8 +180,11 @@ export class Menu<V> {
    */
   readonly items = () => this._items().map(i => i._pattern);
 
+  /** Whether the menu or any of its child elements are currently focused. */
+  readonly isFocused = computed(() => this._pattern.isFocused());
+
   /** Whether the menu is visible. */
-  isVisible = computed(() => this._pattern.isVisible());
+  readonly isVisible = computed(() => this._pattern.isVisible());
 
   /** A callback function triggered when a menu item is selected. */
   onSelect = output<V>();
@@ -294,6 +303,9 @@ export class MenuBar<V> {
   /** The delay in seconds before the typeahead buffer is cleared. */
   readonly typeaheadDelay = input<number>(0.5);
 
+  /** Whether the menubar or any of its child elements are currently focused. */
+  readonly isFocused = computed(() => this._pattern.isFocused());
+
   /** The menu ui pattern instance. */
   readonly _pattern: MenuBarPattern<V>;
 
@@ -340,10 +352,10 @@ export class MenuBar<V> {
     'role': 'menuitem',
     'class': 'ng-menu-item',
     '(focusin)': 'onFocusIn()',
-    '[attr.tabindex]': '_pattern.tabindex()',
-    '[attr.data-active]': '_pattern.isActive()',
-    '[attr.aria-haspopup]': '_pattern.hasPopup()',
-    '[attr.aria-expanded]': '_pattern.expanded()',
+    '[attr.tabindex]': '_pattern.tabIndex()',
+    '[attr.data-active]': 'isActive()',
+    '[attr.aria-haspopup]': 'hasPopup()',
+    '[attr.aria-expanded]': 'expanded()',
     '[attr.aria-disabled]': '_pattern.disabled()',
     '[attr.aria-controls]': '_pattern.submenu()?.id()',
   },
@@ -381,9 +393,18 @@ export class MenuItem<V> {
   /** The submenu associated with the menu item. */
   readonly submenu = input<Menu<V> | undefined>(undefined);
 
+  /** Whether the menu item is active. */
+  readonly isActive = computed(() => this._pattern.isActive());
+
   /** Whether the menu item has been focused. */
   readonly hasBeenFocused = signal(false);
 
+  /** Whether the menuis expanded. */
+  readonly expanded = computed(() => this._pattern.expanded());
+
+  /** Whether the menu item has a popup. */
+  readonly hasPopup = computed(() => this._pattern.hasPopup());
+
   /** The menu item ui pattern instance. */
   readonly _pattern: MenuItemPattern<V> = new MenuItemPattern<V>({
     id: this.id,
diff --git a/src/aria/private/tree/tree.ts b/src/aria/private/tree/tree.ts
index 2b21c2ac9b27..3f5542cd7c17 100644
--- a/src/aria/private/tree/tree.ts
+++ b/src/aria/private/tree/tree.ts
@@ -185,7 +185,7 @@ export class TreePattern<V> {
   /** The root is always expanded. */
   readonly expanded = () => true;
 
-  /** The roow is always visible. */
+  /** The root is always visible. */
   readonly visible = () => true;
 
   /** The tabindex of the tree. */
diff --git a/src/aria/tabs/tabs.ts b/src/aria/tabs/tabs.ts
index 0e4442f6d8aa..23bbd7f03df3 100644
--- a/src/aria/tabs/tabs.ts
+++ b/src/aria/tabs/tabs.ts
@@ -230,10 +230,10 @@ export class TabList implements OnInit, OnDestroy {
   host: {
     'role': 'tab',
     'class': 'ng-tab',
-    '[attr.data-active]': '_pattern.active()',
+    '[attr.data-active]': 'active()',
     '[attr.id]': '_pattern.id()',
-    '[attr.tabindex]': '_pattern.tabindex()',
-    '[attr.aria-selected]': '_pattern.selected()',
+    '[attr.tabindex]': '_pattern.tabIndex()',
+    '[attr.aria-selected]': 'selected()',
     '[attr.aria-disabled]': '_pattern.disabled()',
     '[attr.aria-controls]': '_pattern.controls()',
   },
@@ -268,6 +268,15 @@ export class Tab implements HasElement, OnInit, OnDestroy {
   /** A local unique identifier for the tab. */
   readonly value = input.required<string>();
 
+  /** Whether the tab is active. */
+  readonly active = computed(() => this._pattern.active());
+
+  /** Whether the tab is expanded. */
+  readonly expanded = computed(() => this._pattern.expanded());
+
+  /** Whether the tab is selected. */
+  readonly selected = computed(() => this._pattern.selected());
+
   /** The Tab UIPattern. */
   readonly _pattern: TabPattern = new TabPattern({
     ...this,
@@ -301,8 +310,8 @@ export class Tab implements HasElement, OnInit, OnDestroy {
     'role': 'tabpanel',
     'class': 'ng-tabpanel',
     '[attr.id]': '_pattern.id()',
-    '[attr.tabindex]': '_pattern.tabindex()',
-    '[attr.inert]': '_pattern.hidden() ? true : null',
+    '[attr.tabindex]': '_pattern.tabIndex()',
+    '[attr.inert]': '!visible() ? true : null',
     '[attr.aria-labelledby]': '_pattern.labelledBy()',
   },
   hostDirectives: [
@@ -328,6 +337,9 @@ export class TabPanel implements OnInit, OnDestroy {
   /** A local unique identifier for the tabpanel. */
   readonly value = input.required<string>();
 
+  /** Whether the tab panel is visible. */
+  readonly visible = computed(() => !this._pattern.hidden());
+
   /** The TabPanel UIPattern. */
   readonly _pattern: TabPanelPattern = new TabPanelPattern({
     ...this,
@@ -336,7 +348,7 @@ export class TabPanel implements OnInit, OnDestroy {
   });
 
   constructor() {
-    afterRenderEffect(() => this._deferredContentAware.contentVisible.set(!this._pattern.hidden()));
+    afterRenderEffect(() => this._deferredContentAware.contentVisible.set(this.visible()));
   }
 
   ngOnInit() {
diff --git a/src/aria/toolbar/toolbar.ts b/src/aria/toolbar/toolbar.ts
index 8df53db3f665..9cac1f9f0fb8 100644
--- a/src/aria/toolbar/toolbar.ts
+++ b/src/aria/toolbar/toolbar.ts
@@ -169,8 +169,8 @@ export class Toolbar<V> {
   exportAs: 'ngToolbarWidget',
   host: {
     'class': 'ng-toolbar-widget',
-    '[attr.data-active]': '_pattern.active()',
-    '[attr.tabindex]': '_pattern.tabindex()',
+    '[attr.data-active]': 'active()',
+    '[attr.tabindex]': '_pattern.tabIndex()',
     '[attr.inert]': 'hardDisabled() ? true : null',
     '[attr.disabled]': 'hardDisabled() ? true : null',
     '[attr.aria-disabled]': '_pattern.disabled()',
@@ -202,6 +202,21 @@ export class ToolbarWidget<V> implements OnInit, OnDestroy {
   /** Whether the widget is 'hard' disabled, which is different from `aria-disabled`. A hard disabled widget cannot receive focus. */
   readonly hardDisabled = computed(() => this._pattern.disabled() && !this._toolbar.softDisabled());
 
+  /** The optional ToolbarWidgetGroup this widget belongs to. */
+  readonly _group = inject(ToolbarWidgetGroup, {optional: true});
+
+  /** The value associated with the widget. */
+  readonly value = input.required<V>();
+
+  /** Whether the widget is currently the active one (focused). */
+  readonly active = computed(() => this._pattern.active());
+
+  /** Whether the widget is selected (only relevant in a selection group). */
+  readonly selected = () => this._pattern.selected();
+
+  readonly group: SignalLike<ToolbarWidgetGroupPattern<ToolbarWidgetPattern<V>, V> | undefined> =
+    () => this._group?._pattern;
+
   /** The ToolbarWidget UIPattern. */
   readonly _pattern = new ToolbarWidgetPattern<V>({
     ...this,
diff --git a/src/aria/tree/tree.ts b/src/aria/tree/tree.ts
index 098473b0b952..513ac699734f 100644
--- a/src/aria/tree/tree.ts
+++ b/src/aria/tree/tree.ts
@@ -220,14 +220,14 @@ export class Tree<V> {
   exportAs: 'ngTreeItem',
   host: {
     'class': 'ng-treeitem',
-    '[attr.data-active]': '_pattern.active()',
+    '[attr.data-active]': 'active()',
     'role': 'treeitem',
     '[id]': '_pattern.id()',
-    '[attr.aria-expanded]': '_pattern.expandable() ? _pattern.expanded() : null',
-    '[attr.aria-selected]': '_pattern.selected()',
+    '[attr.aria-expanded]': 'expanded()',
+    '[attr.aria-selected]': 'selected()',
     '[attr.aria-current]': '_pattern.current()',
     '[attr.aria-disabled]': '_pattern.disabled()',
-    '[attr.aria-level]': '_pattern.level()',
+    '[attr.aria-level]': 'level()',
     '[attr.aria-setsize]': '_pattern.setsize()',
     '[attr.aria-posinset]': '_pattern.posinset()',
     '[attr.tabindex]': '_pattern.tabindex()',
@@ -272,6 +272,23 @@ export class TreeItem<V> extends DeferredContentAware implements OnInit, OnDestr
     return (this.parent() as TreeItemGroup<V>).ownedBy().tree();
   });
 
+  /** Whether the item is active. */
+  readonly active = computed(() => this._pattern.active());
+
+  /** Whether this item is currently expanded, returning null if not expandable. */
+  readonly expanded = computed(() =>
+    this._pattern.expandable() ? this._pattern.expanded() : null,
+  );
+
+  /** The level of the current item in a tree. */
+  readonly level = computed(() => this._pattern.level());
+
+  /** Whether the item is selected. */
+  readonly selected = computed(() => this._pattern.selected());
+
+  /** Whether this item is visible due to all of its parents being expanded. */
+  readonly visible = computed(() => this._pattern.visible());
+
   /** The UI pattern for this item. */
   _pattern: TreeItemPattern<V>;