Most answer keys only show the word. The audio shows you the intonation . Is this a question? Are they angry? Happy? The tone gives you clues that the written answer key cannot.
The book forces you to write by hand. Neuroscientific studies show that handwriting activates the brain’s motor cortex, leading to better retention than typing or tapping. Combined with the auditory input from the audio download, you are using two different memory pathways simultaneously. Cornelsen Grammatik Aktiv A1-b1 Audio Download
Unlike the book, the app provides instant feedback on answers. Audio & Video Content: Most answer keys only show the word