The story-driven approach is the series' most distinctive feature, making grammar and vocabulary learning feel natural and engaging.
You are not imagining things. These little red, blue, green, and yellow books (by C.E. Eckersley) are the —retro, slightly hard to find, but musically perfect. essential english for foreign students books 1234 audio
The audio, available on CD or as downloadable MP3 files, provides clear, native-speaker recordings of the dialogues, vocabulary lists, and exercises. This allows learners to: The story-driven approach is the series' most distinctive