Task 3: Defining Game Problems #exploreTask3
Functional characteristics:
* Contains liquid
* Doesn't spill
* Can be sipped from without tipping

Non-functional characteristics:
* Sealed unit
* Sealed sipping spout
* button release for spout
* valve toggle on spout – when released, valve opens, when clicked shut, valve closes
* Durable material
– Requires suction from user – This would be an 'input'
– Requires button to be operated to release spout and clicked to seal spout

Secondary process:
Filling contents
Unscrewing top / resealing main lid
Straw – ensure fixed into main lid

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