2, teach new lessons, highlight the learning focus, break through the learning difficulties.

3. Consolidate practice, improve training density and improve teaching effect.

4. Attract students, adjust emotions and stimulate interest in learning.

The paperless teaching system of Zaoshang can create a vivid and pleasant teaching style scene, make abstract teaching content concrete and clear, make students participate in teaching activities with active thinking and interest, make students pay attention to practical operation, scientifically memorize knowledge, help students play their initiative in learning and think positively, and make teachers focus on teaching and students focus on learning, thus improving teaching quality, optimizing teaching process and enhancing teaching effect.