diff --git a/src/main/py/read_math_function.py b/src/main/py/read_math_function.py
index 00a9327..dfed4b6 100644
--- a/src/main/py/read_math_function.py
+++ b/src/main/py/read_math_function.py
@@ -1,9 +1,9 @@
-def read_constant(type, value):
+def simplify_constant(type, value):
     if type != "c":
         return False
     if is_string(value):
         if is_allowed_string(type, value):
-            return calculate_string(value)
+            return calculate_constant_string(value)
         else:
             return False
     return value
@@ -18,7 +18,7 @@ def is_allowed_string(type, value):
     return all(character.isdigit() or character in allowed for character in value)
 
 
-def calculate_string(string):
+def calculate_constant_string(string):
     string = string.replace('^', '**')
     try:
         return eval(string)
diff --git a/src/test/py/test_read_math_function.py b/src/test/py/test_read_math_function.py
index 0fe03d2..9f20e1a 100644
--- a/src/test/py/test_read_math_function.py
+++ b/src/test/py/test_read_math_function.py
@@ -4,9 +4,9 @@ from src.main.py.read_math_function import *
 
 class read_function(unittest.TestCase):
     def test_constant_without_calculation(self):
-        self.assertEqual(read_constant("c", 42), 42)
+        self.assertEqual(simplify_constant("c", 42), 42)
     def test_constant_no_c(self):
-        self.assertEqual(read_constant("e", "42*e^x"), False)
+        self.assertEqual(simplify_constant("e", "42*e^x"), False)
     def test_constant_isstring_true(self):
         self.assertEqual(is_string("42*e^x"), True)
     def test_constant_isstring_false(self):
@@ -16,13 +16,13 @@ class read_function(unittest.TestCase):
     def test_constant_isallowed_string_false(self):
         self.assertEqual(is_allowed_string("c", "42^(2)+1-3*4/3x"), False)
     def test_constant_calculate_without_pow(self):
-        self.assertEqual(calculate_string("42+1-3*4/3"), 39)
+        self.assertEqual(calculate_constant_string("42+1-3*4/3"), 39)
     def test_constant_calculate_with_pow(self):
-        self.assertEqual(calculate_string("42^(2)+1-3*4/3"), 1761)
+        self.assertEqual(calculate_constant_string("42^(2)+1-3*4/3"), 1761)
     def test_constant_calculate_string_decision(self):
-        self.assertEqual(read_constant("c", "42^(2)+1-3*4/3"), 1761)
+        self.assertEqual(simplify_constant("c", "42^(2)+1-3*4/3"), 1761)
     def test_constant_string_not_allowed_decision(self):
-        self.assertEqual(read_constant("c", "42^(2)+1-3*4/3x"), False)
+        self.assertEqual(simplify_constant("c", "42^(2)+1-3*4/3x"), False)
 
 if __name__ == '__main__':
     unittest.main()