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1. 12. Differentiation test + Chat Challenge [2024] - Mr IL
2. 12. Differentiation test + Chat Challenge [2024] - Ms JL
![12. Differentiation test + Chat Challenge [2024] - Mr IL](https://edutv.sg/public/uploads/17095159878152.png)
![12. Differentiation test + Chat Challenge [2024] - Ms JL](https://edutv.sg/public/uploads/17095159879806.png)