diff --git a/apps/sequence/graph/term_sum_controller.cpp b/apps/sequence/graph/term_sum_controller.cpp
index a58b17f91..65fa6e669 100644
--- a/apps/sequence/graph/term_sum_controller.cpp
+++ b/apps/sequence/graph/term_sum_controller.cpp
@@ -15,12 +15,11 @@ using namespace Poincare;
 namespace Sequence {
 
 TermSumController::TermSumController(Responder * parentResponder, GraphView * graphView, CurveViewRange * graphRange, CurveViewCursor * cursor) :
-  ViewController(parentResponder),
+  SimpleInteractiveCurveViewController(parentResponder, graphRange, graphView, cursor),
   m_graphView(graphView),
   m_legendView(),
   m_graphRange(graphRange),
   m_sequence(nullptr),
-  m_cursor(cursor),
   m_cursorView(),
   m_bufferCursorPosition(0),
   m_step(0),
@@ -33,10 +32,6 @@ const char * TermSumController::title() {
   return I18n::translate(I18n::Message::TermSum);
 }
 
-View * TermSumController::view() {
-  return m_graphView;
-}
-
 void TermSumController::viewWillAppear() {
   m_graphRange->panToMakePointVisible(m_cursor->x(), m_cursor->y(), k_cursorTopMarginRatio, k_cursorRightMarginRatio, k_cursorBottomMarginRatio, k_cursorLeftMarginRatio);
   m_graphView->setVerticalCursor(true);
@@ -57,6 +52,9 @@ void TermSumController::viewWillAppear() {
 }
 
 bool TermSumController::handleEvent(Ion::Events::Event event) {
+  if (event == Ion::Events::Plus || event == Ion::Events::Minus) {
+    return handleZoom(event);
+  }
   if (m_step > 1 && event != Ion::Events::OK && event != Ion::Events::EXE && event != Ion::Events::Back) {
     return false;
   }
@@ -163,6 +161,14 @@ void TermSumController::setSequence(Sequence * sequence) {
   m_sequence = sequence;
 }
 
+CurveView * TermSumController::curveView() {
+  return m_graphView;
+}
+
+InteractiveCurveViewRange * TermSumController::interactiveCurveViewRange() {
+  return m_graphRange;
+}
+
 /* Legend View */
 
 TermSumController::LegendView::LegendView() :
diff --git a/apps/sequence/graph/term_sum_controller.h b/apps/sequence/graph/term_sum_controller.h
index 78a9cfe72..f55e067bf 100644
--- a/apps/sequence/graph/term_sum_controller.h
+++ b/apps/sequence/graph/term_sum_controller.h
@@ -6,14 +6,14 @@
 #include "curve_view_range.h"
 #include "vertical_cursor_view.h"
 #include "../../shared/curve_view_cursor.h"
+#include "../../shared/simple_interactive_curve_view_controller.h"
 
 namespace Sequence {
 
-class TermSumController : public ViewController {
+class TermSumController : public Shared::SimpleInteractiveCurveViewController {
 public:
   TermSumController(Responder * parentResponder, GraphView * graphView, CurveViewRange * graphRange, Shared::CurveViewCursor * cursor);
   const char * title() override;
-  View * view() override;
   void viewWillAppear() override;
   bool handleEvent(Ion::Events::Event event) override;
   bool moveCursorHorizontallyToPosition(int position);
@@ -23,6 +23,8 @@ private:
   constexpr static float k_cursorRightMarginRatio = 0.04f; // (cursorWidth/2)/graphViewWidth
   constexpr static float k_cursorBottomMarginRatio = 0.28f; // (cursorHeight/2+bannerHeigh)/graphViewHeight
   constexpr static float k_cursorLeftMarginRatio = 0.04f;  // (cursorWidth/2)/graphViewWidth
+  Shared::InteractiveCurveViewRange * interactiveCurveViewRange() override;
+  Shared::CurveView * curveView() override;
   class LegendView : public View {
   public:
     LegendView();
@@ -50,7 +52,6 @@ private:
   LegendView m_legendView;
   CurveViewRange * m_graphRange;
   Sequence * m_sequence;
-  Shared::CurveViewCursor * m_cursor;
   VerticalCursorView m_cursorView;
   /* The user can move the cursor to an abscissa n by typing the right digits.
    * To be able to go to abscissa represented by more than one digit, we record