diff --git a/ifrs17/DataModel/DataStructure.ipynb b/ifrs17/DataModel/DataStructure.ipynb
index 988bc676..d8992bc6 100644
--- a/ifrs17/DataModel/DataStructure.ipynb
+++ b/ifrs17/DataModel/DataStructure.ipynb
@@ -305,7 +305,7 @@
                 "<a id='dimensions'></a>",
                 "\n# Dimensions",
                 "\n",
-                "\nDimensions are data which tipically can be given a short name, here called 'System Name'. They also change slowly with time. A typical example is currencies, and examples of System Names are EUR, CHF, etc.",
+                "\nDimensions are data which typically can be given a short name, here called 'System Name'. They also change slowly with time. A typical example is currencies, and examples of System Names are EUR, CHF, etc.",
                 "\n",
                 "\nThe advantages of using Dimensions are:",
                 "\n- The data is easier to maintain (the data is said to be 'normalized');",
@@ -562,7 +562,7 @@
                 "<a id='bs-variable-type'></a>",
                 "\n## Balance Sheet Variable Type",
                 "\n",
-                "\nThe BsVariableType is used to descibe the Anlysis of change of the Balance Sheet reports."
+                "\nThe BsVariableType is used to descibe the Analysis of change of the Balance Sheet reports."
             ],
             "metadata": {},
             "execution_count": 0,
@@ -1116,7 +1116,7 @@
                 "\n",
                 "\nThe Yield Curve values must be entered with **yearly** granularity, i.e. every value corresponds to the rate of the whole year starting from the year entered in column <code>Year</code>. The last value is considered valid also for the following years (for which no value has been provided). ",
                 "\n",
-                "\nDuring calculation, the Yield Curve are retrieved from the DataSource. The Yield Curve Name defined for each group-of-contracts will be used to match the Name of the Yield Curve to be considered. This occurs only for the curve that is used in the computation of the Contractual Service Margin (locked-in for BBA valuation approach, current otherwise). The calculation engine allows the update of the locked-in curve during the entire inception year of the group-of-contracts. When the locked-in Yield Curve is used, the latest Yield Curve available in the system with Year earlier or equal to the inception Year of the group-of-contracts will be used. When the current Yield Curve is used in the calculation, the latest Yield Curve available in the system with Year and Month earlier or equal to Year and Month of the closing period will be used."
+                "\nDuring calculation, the Yield Curve values are retrieved from the DataSource. The Yield Curve Name defined for each group-of-contracts will be used to match the Name of the Yield Curve to be considered. This occurs only for the curve that is used in the computation of the Contractual Service Margin (locked-in for BBA valuation approach, current otherwise). The calculation engine allows the update of the locked-in curve during the entire inception year of the group-of-contracts. When the locked-in Yield Curve is used, the latest Yield Curve available in the system with Year earlier or equal to the inception Year of the group-of-contracts will be used. When the current Yield Curve is used in the calculation, the latest Yield Curve available in the system with Year and Month earlier or equal to Year and Month of the closing period will be used."
             ],
             "metadata": {},
             "execution_count": 0,
@@ -2032,7 +2032,7 @@
             "source": [
                 "# Args",
                 "\n",
-                "\nArgs are used to hold data related to the partition and additional information required to performe calculation at import and report. ",
+                "\nArgs are used to hold data related to the partition and additional information required to perform calculation at import and report. ",
                 "\nThey are not persisted, i.e. they are not saved on the database."
             ],
             "metadata": {},
diff --git a/ifrs17/Utils/ActivityLog.ipynb b/ifrs17/Utils/ActivityLog.ipynb
index e0e951ca..4bd9a413 100644
--- a/ifrs17/Utils/ActivityLog.ipynb
+++ b/ifrs17/Utils/ActivityLog.ipynb
@@ -79,7 +79,7 @@
             "cell_type": "markdown",
             "source": [
                 "## Import Export Activity ",
-                "\nEvery activity to and from (import or export) the DataSource is tracked by recording an ImportExportActivity. Among other information this record tracks the user who performe the action, the timestamp, the activity log, and a unique identifier which can be used to retrieve the data subject of the activity. "
+                "\nEvery activity to and from (import or export) the DataSource is tracked by recording an ImportExportActivity. Among other information this record tracks the user who performs the action, the timestamp, the activity log, and a unique identifier which can be used to retrieve the data subject of the activity. "
             ],
             "metadata": {},
             "execution_count": 0,