If you're in 9th grade and finding it tricky to evaluate algebraic expressions, don’t worry! You’re not alone. Here are some helpful resources that worked for me when I was in the same place:

1. Online Tutorials: Check out websites like Khan Academy or Purplemath. They have easy-to-follow lessons that take you step-by-step through evaluating expressions. Plus, they offer practice problems to help you learn.

2. YouTube Channels: You might want to watch channels like Math Antics or PatrickJMT. They create fun videos that make tough topics easier to understand.

3. Study Groups: Try teaming up with your classmates. Talking about how you solve problems can help you learn more, and your friends might have tips that work well for them.

4. Homework Help Centers: If your school has a tutoring program, make sure to use it! Getting one-on-one help can really make a difference.

5. Practice Problems: Use your textbook or search for worksheets online. Focus on problems where you plug in values into expressions, like figuring out $2x + 3$ for $x = 4$.

Remember, the more you practice, the better you'll get. And it’s perfectly fine to ask for help whenever you need it!