TỔNG HỢP KIẾN THỨC MÔN KHOA HỌC by LỚP 4 https://padlet.com/khoi4t36/nz1v6yr0fw2255vz Nội dung kiến thức trọng tâm khoa học en-us 2022-11-26 07:48:11 UTC 2025-09-30 13:53:51 UTC hello@padlet.com https://padlet.net/icons/png/1f308.png Cách âm thanh được tạo ra khoi4t36 https://padlet.com/khoi4t36/nz1v6yr0fw2255vz/wish/2398443067 2022-11-26 07:48:11 UTC https://padlet.com/khoi4t36/nz1v6yr0fw2255vz/wish/2398443067 Thí nghiệm: Thực hành đo độ lớn của âm thanh khoi4t36 https://padlet.com/khoi4t36/nz1v6yr0fw2255vz/wish/2398443068 2022-11-26 07:48:11 UTC https://padlet.com/khoi4t36/nz1v6yr0fw2255vz/wish/2398443068 Cao độ của âm thanh khoi4t36 https://padlet.com/khoi4t36/nz1v6yr0fw2255vz/wish/2398443069 2022-11-26 07:48:11 UTC https://padlet.com/khoi4t36/nz1v6yr0fw2255vz/wish/2398443069 Thay đổi độ to của âm thanh khoi4t36 https://padlet.com/khoi4t36/nz1v6yr0fw2255vz/wish/2398443070 2022-11-26 07:48:11 UTC https://padlet.com/khoi4t36/nz1v6yr0fw2255vz/wish/2398443070 Thí nghiệm: Khảo sát về khả 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