diff --git a/src/activities/memory-enumerate/ActivityInfo.qml b/src/activities/memory-enumerate/ActivityInfo.qml
--- a/src/activities/memory-enumerate/ActivityInfo.qml
+++ b/src/activities/memory-enumerate/ActivityInfo.qml
@@ -36,4 +36,5 @@
   credit: ""
   section: "math numeration"
   createdInVersion: 0
+  levels: "1,2,3,4,5,6,7,8"
 }
diff --git a/src/activities/memory-enumerate/MemoryEnumerate.qml b/src/activities/memory-enumerate/MemoryEnumerate.qml
--- a/src/activities/memory-enumerate/MemoryEnumerate.qml
+++ b/src/activities/memory-enumerate/MemoryEnumerate.qml
@@ -22,9 +22,7 @@
 import QtQuick 2.6
 
 import "../memory"
-import "dataset.js" as Dataset
 
 MemoryCommon {
-    dataset: Dataset.get()
     backgroundImg: "qrc:/gcompris/src/activities/memory/resource/background.svg"
 }
diff --git a/src/activities/memory-enumerate/dataset.js b/src/activities/memory-enumerate/dataset.js
deleted file mode 100644
--- a/src/activities/memory-enumerate/dataset.js
+++ /dev/null
@@ -1,122 +0,0 @@
-/* GCompris
- *
- * Copyright (C) 2014 Bruno Coudoin
- *
- *   This program is free software; you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation; either version 3 of the License, or
- *   (at your option) any later version.
- *
- *   This program is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU General Public License for more details.
- *
- *   You should have received a copy of the GNU General Public License
- *   along with this program; if not, see <https://www.gnu.org/licenses/>.
- */
-
-.import GCompris 1.0 as GCompris //for ApplicationInfo
-
-var url = "qrc:/gcompris/src/activities/memory-enumerate/resource/"
-
-var texts = [
-            ["", 0],
-            ["", 1],
-            ["", 2],
-            ["", 3],
-            ["", 4],
-            ["", 5],
-            ["", 6],
-            ["", 7],
-            ["", 8],
-            ["", 9]
-        ]
-
-var images = [
-            [url + 'math_0.svg', ''],
-            [url + 'math_1.svg', ''],
-            [url + 'math_2.svg', ''],
-            [url + 'math_3.svg', ''],
-            [url + 'math_4.svg', ''],
-            [url + 'math_5.svg', ''],
-            [url + 'math_6.svg', ''],
-            [url + 'math_7.svg', ''],
-            [url + 'math_8.svg', ''],
-            [url + 'math_9.svg', '']
-        ]
-
-var sounds = [
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0030.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0031.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0032.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0033.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0034.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0035.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0036.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0037.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0038.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0039.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/10.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/11.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/12.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/13.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/14.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/15.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/16.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/17.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/18.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/19.$CA")],
-            ["",
-             GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/20.$CA")]
-        ]
-
-
-var memory_cards = [
-            { // Level 1
-                columns: 3,
-                rows: 2,
-                texts: texts.slice(0, 6),
-                images: images.slice(0, 6),
-                sounds: sounds.slice(0, 6)
-            },
-            { // Level 2
-                columns: 3,
-                rows: 2,
-                texts: texts.slice(4, 10),
-                images: images.slice(4, 10),
-                sounds: sounds.slice(4, 10)
-            },
-            { // Level 3
-                columns: 5,
-                rows: 2,
-                texts: texts.slice(0, 10),
-                images: images.slice(0, 10),
-                sounds: sounds.slice(0, 10)
-            }
-        ]
-
-
-function get() {
-    return memory_cards
-}
diff --git a/src/activities/memory-enumerate/resource/1/Data.qml b/src/activities/memory-enumerate/resource/1/Data.qml
new file mode 100644
--- /dev/null
+++ b/src/activities/memory-enumerate/resource/1/Data.qml
@@ -0,0 +1,57 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ * Authors:
+ *   Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+import GCompris 1.0
+import GCompris 1.0 as GCompris
+
+Data {
+    objective: qsTr("Match the numbers up to 2.")
+    difficulty: 1
+
+    property string url: "qrc:/gcompris/src/activities/memory-enumerate/resource/"
+
+    property var texts: [
+                ["", 1],
+                ["", 2]
+            ]
+
+    property var images: [
+                [url + 'math_1.svg', ''],
+                [url + 'math_2.svg', ''],
+            ]
+
+    property var sounds: [
+                ["",
+                 GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0031.$CA")],
+                ["",
+                 GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0032.$CA")]
+            ]
+
+    data: [
+        { // Level 1
+            "columns": 2,
+            "rows": 2,
+            "texts": texts.slice(0, 2),
+            "images": images.slice(0, 2),
+            "sounds": sounds.slice(0, 2)
+        }
+    ]
+}
diff --git a/src/activities/memory-enumerate/resource/2/Data.qml b/src/activities/memory-enumerate/resource/2/Data.qml
new file mode 100644
--- /dev/null
+++ b/src/activities/memory-enumerate/resource/2/Data.qml
@@ -0,0 +1,62 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ * Authors:
+ *   Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+import GCompris 1.0
+import GCompris 1.0 as GCompris
+
+Data {
+    objective: qsTr("Match the numbers up to 3.")
+    difficulty: 1
+
+    property string url: "qrc:/gcompris/src/activities/memory-enumerate/resource/"
+
+    property var texts: [
+                ["", 1],
+                ["", 2],
+                ["", 3]
+
+            ]
+
+    property var images: [
+                [url + 'math_1.svg', ''],
+                [url + 'math_2.svg', ''],
+                [url + 'math_3.svg', '']
+            ]
+
+    property var sounds: [
+                ["",
+                 GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0031.$CA")],
+                ["",
+                 GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0032.$CA")],
+                ["",
+                 GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0033.$CA")]
+            ]
+
+    data: [
+        { // Level 1
+            "columns": 3,
+            "rows": 2,
+            "texts": texts.slice(0, 4),
+            "images": images.slice(0, 4),
+            "sounds": sounds.slice(0, 4)
+        }
+    ]
+}
diff --git a/src/activities/memory-enumerate/resource/3/Data.qml b/src/activities/memory-enumerate/resource/3/Data.qml
new file mode 100644
--- /dev/null
+++ b/src/activities/memory-enumerate/resource/3/Data.qml
@@ -0,0 +1,65 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ * Authors:
+ *   Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+import GCompris 1.0
+import GCompris 1.0 as GCompris
+
+Data {
+    objective: qsTr("Match the numbers up to 4.")
+    difficulty: 1
+
+    property string url: "qrc:/gcompris/src/activities/memory-enumerate/resource/"
+
+    property var texts: [
+                ["", 1],
+                ["", 2],
+                ["", 3],
+                ["", 4]
+            ]
+
+    property var images: [
+                [url + 'math_1.svg', ''],
+                [url + 'math_2.svg', ''],
+                [url + 'math_3.svg', ''],
+                [url + 'math_4.svg', '']
+            ]
+
+    property var sounds: [
+                ["",
+                 GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0031.$CA")],
+                ["",
+                 GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0032.$CA")],
+                ["",
+                 GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0033.$CA")],
+                ["",
+                 GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0034.$CA")],
+            ]
+
+    data: [
+        { // Level 1
+            "columns": 4,
+            "rows": 2,
+            "texts": texts.slice(0, 4),
+            "images": images.slice(0, 4),
+            "sounds": sounds.slice(0, 4)
+        }
+    ]
+}
diff --git a/src/activities/memory-enumerate/resource/4/Data.qml b/src/activities/memory-enumerate/resource/4/Data.qml
new file mode 100644
--- /dev/null
+++ b/src/activities/memory-enumerate/resource/4/Data.qml
@@ -0,0 +1,73 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ * Authors:
+ *   Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+import GCompris 1.0
+import GCompris 1.0 as GCompris
+
+Data {
+    objective: qsTr("Match the numbers up to 5.")
+    difficulty: 2
+
+    property string url: "qrc:/gcompris/src/activities/memory-enumerate/resource/"
+
+    property var texts: [
+        ["", 0],
+        ["", 1],
+        ["", 2],
+        ["", 3],
+        ["", 4],
+        ["", 5]
+    ]
+
+    property var images: [
+        [url + 'math_0.svg', ''],
+        [url + 'math_1.svg', ''],
+        [url + 'math_2.svg', ''],
+        [url + 'math_3.svg', ''],
+        [url + 'math_4.svg', ''],
+        [url + 'math_5.svg', ''],
+    ]
+
+    property var sounds: [
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0030.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0031.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0032.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0033.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0034.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0035.$CA")]
+    ]
+
+    data: [
+        { // Level 1
+            "columns": 4,
+            "rows": 3,
+            "texts": texts.slice(0, 6),
+            "images": images.slice(0, 6),
+            "sounds": sounds.slice(0, 6)
+        }
+    ]
+}
diff --git a/src/activities/memory-enumerate/resource/5/Data.qml b/src/activities/memory-enumerate/resource/5/Data.qml
new file mode 100644
--- /dev/null
+++ b/src/activities/memory-enumerate/resource/5/Data.qml
@@ -0,0 +1,79 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ * Authors:
+ *   Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+import GCompris 1.0
+import GCompris 1.0 as GCompris
+
+Data {
+    objective: qsTr("Match the numbers up to 6.")
+    difficulty: 3
+
+    property string url: "qrc:/gcompris/src/activities/memory-enumerate/resource/"
+
+    property var texts: [
+        ["", 0],
+        ["", 1],
+        ["", 2],
+        ["", 3],
+        ["", 4],
+        ["", 5],
+        ["", 6],
+
+    ]
+
+    property var images: [
+        [url + 'math_0.svg', ''],
+        [url + 'math_1.svg', ''],
+        [url + 'math_2.svg', ''],
+        [url + 'math_3.svg', ''],
+        [url + 'math_4.svg', ''],
+        [url + 'math_5.svg', ''],
+        [url + 'math_6.svg', ''],
+
+    ]
+
+    property var sounds: [
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0030.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0031.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0032.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0033.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0034.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0035.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0036.$CA")]
+    ]
+
+    data: [
+        { // Level 1
+            "columns": 4,
+            "rows": 3,
+            "texts": texts.slice(0, 7),
+            "images": images.slice(0, 7),
+            "sounds": sounds.slice(0, 7)
+        }
+    ]
+}
diff --git a/src/activities/memory-enumerate/resource/6/Data.qml b/src/activities/memory-enumerate/resource/6/Data.qml
new file mode 100644
--- /dev/null
+++ b/src/activities/memory-enumerate/resource/6/Data.qml
@@ -0,0 +1,81 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ * Authors:
+ *   Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+import GCompris 1.0
+import GCompris 1.0 as GCompris
+
+Data {
+    objective: qsTr("Match the numbers up to 7.")
+    difficulty: 3
+
+    property string url: "qrc:/gcompris/src/activities/memory-enumerate/resource/"
+
+    property var texts: [
+        ["", 0],
+        ["", 1],
+        ["", 2],
+        ["", 3],
+        ["", 4],
+        ["", 5],
+        ["", 6],
+        ["", 7],
+    ]
+
+    property var images: [
+        [url + 'math_0.svg', ''],
+        [url + 'math_1.svg', ''],
+        [url + 'math_2.svg', ''],
+        [url + 'math_3.svg', ''],
+        [url + 'math_4.svg', ''],
+        [url + 'math_5.svg', ''],
+        [url + 'math_6.svg', ''],
+        [url + 'math_7.svg', '']
+    ]
+
+    property var sounds: [
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0030.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0031.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0032.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0033.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0034.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0035.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0036.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0037.$CA")]
+    ]
+
+    data: [
+        { // Level 1
+            "columns": 4,
+            "rows": 4,
+            "texts": texts.slice(0, 8),
+            "images": images.slice(0, 8),
+            "sounds": sounds.slice(0, 8)
+        }
+    ]
+}
diff --git a/src/activities/memory-enumerate/resource/7/Data.qml b/src/activities/memory-enumerate/resource/7/Data.qml
new file mode 100644
--- /dev/null
+++ b/src/activities/memory-enumerate/resource/7/Data.qml
@@ -0,0 +1,85 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ * Authors:
+ *   Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+import GCompris 1.0
+import GCompris 1.0 as GCompris
+
+Data {
+    objective: qsTr("Match the numbers up to 8.")
+    difficulty: 3
+
+    property string url: "qrc:/gcompris/src/activities/memory-enumerate/resource/"
+
+    property var texts: [
+        ["", 0],
+        ["", 1],
+        ["", 2],
+        ["", 3],
+        ["", 4],
+        ["", 5],
+        ["", 6],
+        ["", 7],
+        ["", 8]
+    ]
+
+    property var images: [
+        [url + 'math_0.svg', ''],
+        [url + 'math_1.svg', ''],
+        [url + 'math_2.svg', ''],
+        [url + 'math_3.svg', ''],
+        [url + 'math_4.svg', ''],
+        [url + 'math_5.svg', ''],
+        [url + 'math_6.svg', ''],
+        [url + 'math_7.svg', ''],
+        [url + 'math_8.svg', ''],
+    ]
+
+    property var sounds: [
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0030.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0031.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0032.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0033.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0034.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0035.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0036.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0037.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0038.$CA")]
+    ]
+
+    data: [
+        { // Level 1
+            "columns": 4,
+            "rows": 4,
+            "texts": texts.slice(0, 9),
+            "images": images.slice(0, 9),
+            "sounds": sounds.slice(0, 9)
+        }
+    ]
+}
diff --git a/src/activities/memory-enumerate/resource/8/Data.qml b/src/activities/memory-enumerate/resource/8/Data.qml
new file mode 100644
--- /dev/null
+++ b/src/activities/memory-enumerate/resource/8/Data.qml
@@ -0,0 +1,89 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ * Authors:
+ *   Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+import GCompris 1.0
+import GCompris 1.0 as GCompris
+
+Data {
+    objective: qsTr("Match the numbers up to 9.")
+    difficulty: 3
+
+    property string url: "qrc:/gcompris/src/activities/memory-enumerate/resource/"
+
+    property var texts: [
+        ["", 0],
+        ["", 1],
+        ["", 2],
+        ["", 3],
+        ["", 4],
+        ["", 5],
+        ["", 6],
+        ["", 7],
+        ["", 8],
+        ["", 9]
+    ]
+
+    property var images: [
+        [url + 'math_0.svg', ''],
+        [url + 'math_1.svg', ''],
+        [url + 'math_2.svg', ''],
+        [url + 'math_3.svg', ''],
+        [url + 'math_4.svg', ''],
+        [url + 'math_5.svg', ''],
+        [url + 'math_6.svg', ''],
+        [url + 'math_7.svg', ''],
+        [url + 'math_8.svg', ''],
+        [url + 'math_9.svg', '']
+    ]
+
+    property var sounds: [
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0030.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0031.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0032.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0033.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0034.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0035.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0036.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0037.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0038.$CA")],
+        ["",
+         GCompris.ApplicationInfo.getAudioFilePath("voices-$CA/$LOCALE/alphabet/U0039.$CA")],
+    ]
+
+    data: [
+        { // Level 1
+            "columns": 5,
+            "rows": 4,
+            "texts": texts.slice(0, 10),
+            "images": images.slice(0, 10),
+            "sounds": sounds.slice(0, 10)
+        }
+    ]
+}
diff --git a/src/activities/memory/MemoryCommon.qml b/src/activities/memory/MemoryCommon.qml
--- a/src/activities/memory/MemoryCommon.qml
+++ b/src/activities/memory/MemoryCommon.qml
@@ -51,6 +51,7 @@
         property bool keyNavigationVisible: false
 
         Component.onCompleted: {
+            dialogActivityConfig.initialize()
             activity.start.connect(start)
             activity.stop.connect(stop)
         }
@@ -66,7 +67,7 @@
             property int selectionCount
             property int tuxScore: tuxScore.text
             property int playerScore: playerScore.text
-            property var dataset: activity.dataset
+            property var levels: activity.datasetLoader.data !=  0 ? activity.datasetLoader.data : activity.dataset
             property alias containerModel: containerModel
             property alias grid: grid
             property bool blockClicks: false
@@ -143,13 +144,35 @@
             onClose: home()
         }
 
+        DialogChooseLevel {
+            id: dialogActivityConfig
+            currentActivity: activity.activityInfo
+
+            onSaveData: {
+                levelFolder = dialogActivityConfig.chosenLevels
+                currentActivity.currentLevels = dialogActivityConfig.chosenLevels
+                ApplicationSettings.setCurrentLevels(currentActivity.name, dialogActivityConfig.chosenLevels)
+            }
+            onClose: {
+                home()
+            }
+            onStartActivity: {
+                background.stop()
+                background.start()
+            }
+        }
+
+
         Bar {
             id: bar
-            content: BarEnumContent { value: help | home | level }
+            content: BarEnumContent { value: help | home | level | activityConfig }
             onHelpClicked: {
                 displayDialog(dialogHelp)
             }
             onPreviousLevelClicked: Activity.previousLevel()
+            onActivityConfigClicked: {
+                displayDialog(dialogActivityConfig)
+            }
             onNextLevelClicked: Activity.nextLevel()
             onHomeClicked: home()
         }
diff --git a/src/activities/memory/memory.js b/src/activities/memory/memory.js
--- a/src/activities/memory/memory.js
+++ b/src/activities/memory/memory.js
@@ -37,7 +37,7 @@
     items = items_
 
     currentLevel = 0
-    numberOfLevel = items.dataset.length
+    numberOfLevel = items.levels.length
 
     initLevel()
 }
@@ -54,11 +54,11 @@
     items.blockClicks = false
 
     // compute the number of cards
-    var columns = items.dataset[currentLevel].columns
-    var rows = items.dataset[currentLevel].rows
-    var images = items.dataset[currentLevel].images
-    var sounds = items.dataset[currentLevel].sounds
-    var texts = items.dataset[currentLevel].texts
+    var columns = items.levels[currentLevel].columns
+    var rows = items.levels[currentLevel].rows
+    var images = items.levels[currentLevel].images
+    var sounds = items.levels[currentLevel].sounds
+    var texts = items.levels[currentLevel].texts
     items.columns = columns
     items.rows = rows
     nbOfPair = rows * columns / 2
@@ -70,7 +70,7 @@
                 sounds ? sounds.length : 0,
                 texts ? texts.length : 0)
 
-    if(rows * columns > maxData) {
+    if(rows * columns  > maxData * 2) {
         console.log("ERROR: Memory dataset does not have enough data pairs at level ",
                     currentLevel + 1)
         return