I just love the Family & Friends series books for my smart 1st graders! The #3 is significantly harder than the #2, but most of my students were ready for more challenging work anyway, and the book has comic strips and many colorful pictures that totally attracted my young and smart students. I would highly recommend this book to any ESL teacher who has smart, fast learning ESL students who get easily bored with other existing ESL textbooks.
This book also covers all four parts of ESL lessons - grammar, reading, writing, and speaking, which makes it so much easier to prepare for classes. I am so happy with Family & Friends!