At 7:00 a.m., the temperature is $-11^\circ\text{C}$. By 11:00 a.m., the temperature has risen by $5^\circ\text{C}$. To find the temperature at 11:00 a.m., we add $5^\circ\text{C}$ to $-11^\circ\text{C}$:

$-11^\circ\text{C} + 5^\circ\text{C} = -6^\circ\text{C}$

So, the temperature at 11:00 a.m. is $-6^\circ\text{C}$.

Would you like more details on temperature change or have any other questions? Here's a list of questions that could expand your understanding:

1. What happens if the temperature decreases by a certain number of degrees instead of increasing?
2. How can we convert temperatures between Celsius and Fahrenheit?
3. What is the concept of the freezing point and boiling point of water in different temperature scales?
4. How do temperature changes affect daily weather patterns?
5. How can we model temperature changes over the course of a day mathematically?

Tip: To track temperature changes, it's often helpful to think of it as simple addition or subtraction based on whether the temperature is rising or falling!