diff --git a/notebooks/sagemath_guide.ipynb b/notebooks/sagemath_guide.ipynb
index 5ff452e..d4babd2 100644
--- a/notebooks/sagemath_guide.ipynb
+++ b/notebooks/sagemath_guide.ipynb
@@ -219,6 +219,7 @@
     }
    ],
    "source": [
+    "# Sage provides basic math operations\n",
     "print(2**3)\n",
     "print(2^3)\n",
     "print(10 % 3) # ^ is a synonym for ** (unlike in Python)\n",
@@ -226,6 +227,102 @@
     "print(10//4) # for integer arguments, % means mod, i.e., remainder"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": 15,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "1.84390889145858\n",
+      "-0.912021158525540\n",
+      "1/2*sqrt(3)\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Many Familiar mathematical functions\n",
+    "print(sqrt(3.4))\n",
+    "print(sin(5.135))\n",
+    "print(sin(pi/3))"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 17,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "e^2\n",
+      "7.38905609893065\n",
+      "1.77245385090552\n",
+      "-0.54402\n",
+      "-0.5440211109\n",
+      "3.1415926535897932384626433832795028841971693993751058209749\n"
+     ]
+    }
+   ],
+   "source": [
+    "# To get numerical approximation use either N, aka numerical_approx,\n",
+    "# or method n (function N same as n)\n",
+    "# optional arguments:\n",
+    "# prec - requested # of bits of precision\n",
+    "# digits - requested # of decimal digits of precision, default is 53\n",
+    "print(exp(2))\n",
+    "print(n(exp(2)))\n",
+    "print(sqrt(pi).numerical_approx())\n",
+    "print(sin(10).n(digits=5))\n",
+    "print(N(sin(10),digits=10))\n",
+    "print(numerical_approx(pi, prec=200))"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 18,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "<class 'sage.rings.integer.Integer'>\n",
+      "<class 'sage.rings.rational.Rational'>\n",
+      "<class 'str'>\n"
+     ]
+    }
+   ],
+   "source": [
+    "a = 5 # a is an integer\n",
+    "print(type(a))\n",
+    "a = 5/3 # now a is a rational number\n",
+    "print(type(a))\n",
+    "a = 'hello' # now a is a string\n",
+    "print(type(a))"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Getting Help\n",
+    "\n",
+    "Access built-in documentation, accessible by typing name of function or constant, followed by question mark"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 19,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "tan?"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,