Can you please help me identify these components and state their function?
It looks like the baby got your digital thermometer.




  Can you please help me identify these components and state their function?



LCD (liquid crystal display) provides a human readable display of the temperature in adequate light.
Metallic contacts provide connections - most likely from the circuit board to the battery (see below).
Screw(s) skruː noun, a short, slender, metal pin with a raised helical thread running around it and a slotted head, used to join things together by being rotated so that it pierces wood or other material and is held tightly in place.
Probably the push-button membrane which is designed to bridge out contacts on the PCB to turn on and off the thermometer.
A 'coin' cell to power the electronics.
A piezo buzzer used to generate an audible 'beep' when a stable measurement has been obtained.
The battery cap.


Check the baby's diaper / nappy for the rest of the parts including the sensor and PCB.