How to Sign "Heard"
To sign 'heard' (which is the exact same sign as 'hear'), form your dominant hand into a '1' handshape by extending your index finger. Bring your hand up to your ear and point your index finger directly at it, either lightly touching the ear or pointing very close to it. Since ASL doesn't conjugate verbs with endings like '-ed', you use this same sign for both 'hear' and 'heard', relying on context or time signs to show it happened in the past.