Explore / Early years (ages 5–7) / Science / Light and dark
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- Sources of lightNew: questions are written when you open itNew
- The SunNew: questions are written when you open itNew
- ShadowsNew: questions are written when you open itNew
- Day and nightNew: questions are written when you open itNew
- Seeing in the darkNew: questions are written when you open itNew
- Staying safe in the SunNew: questions are written when you open itNew