Google Classroom has become an essential tool for many educators and students, especially during remote learning. To enhance your Google Classroom experience, here are 20 amazing free sites and apps that you can use:

1. Edpuzzle: Engage your students by creating interactive video lessons.
2. Pear Deck: Make your presentations interactive with real-time student responses.
3. Flipgrid: Foster student engagement through video discussions and reflections.
4. Quizlet: Create interactive flashcards and study materials for your students.
5. Kami: Collaboratively annotate and mark up PDFs, Google Docs, and more.
6. Canva: Design eye-catching graphics and visual presentations for your lessons.
7. Read&Write: Support students with reading and writing difficulties.
8. Padlet: Create interactive bulletin boards for collaborative discussions.
9. Screencastify: Record and share video lessons with your students.
10. Kahoot!: Gamify your classroom with interactive quizzes and learning games.
11. Lucidchart: Create and share visual diagrams and mind maps.
12. Insert Learning: Embed questions, quizzes, and interactive content into websites.
13. Powtoon: Make animated videos and presentations to engage students.
14. Remind: Communicate with students and parents through text messages.
15. Newsela: Provide students with high-interest news articles at their reading level.
16. Flippity: Turn Google Sheets into interactive games and activities.
17. Socrative: Assess student learning through real-time quizzes and polls.
18. Book Creator: Empower students to create and publish their own digital books.
19. Tinkercad: Introduce 3D design and modeling in a user-friendly way.
20. WeVideo: Edit and create videos collaboratively with your students.

These free sites and apps will add a new level of engagement and interactivity to your Google Classroom. Explore them, experiment with different features, and find the ones that work best for your teaching style and student needs. Happy teaching!