To sign bright, take your two open number 5 hands, stick the two middle fingers forward and close to each other, then draw both hands apart (as if you are drawing curtains open) at the same time wincing and turning your head to the side and slightly closing your eyes, to suggest that you cannot stand the glare of the bright sunlight coming from the window.
Teach your baby or toddler the bright sign in context, when you notice them wincing from the bright light. It is also good to teach this sign along with its contrast sign, dark.
This is a useful flash card taught best in real-life contexts, and in conjunction with other signs pertaining to light, brightness, and color.
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