Teacher should close the projector function before playing the music to avoid pupils seeing the answer. Music 1: https://wp.me/pbwsEE-C Music 2: https://wp.me/pbwsEe-R Music 3: https://wp.me/pbwsEe-U Music 4: https://wp.me/pbwsEe-X Source: MUSOPEN – Royalty Free Music
名創小學數學 MC Primary Mathematics 