01
Check colour and parity as separate facts
For each card, write whether it is blue and whether its number is even. K1 satisfies both conditions. K2 satisfies only the colour condition, K3 only the even-number condition and K4 neither. Under Rule A, K1 belongs to X and the other three belong to Y. A complete answer explains the failed condition for each Y card rather than treating Y as an unexplained remainder. Keeping the two checks separate makes it easier to see whether an error came from reading the card or combining the conditions.
02
Change the connector while keeping the cards
Rule B assigns a card to X when it is blue or its number is even, including cards that satisfy both. The inputs stay exactly the same. K1, K2 and K3 now belong to X; K4 remains in Y. K2 and K3 change category because one satisfied condition is enough under Rule B. K1 does not change because it already satisfied both. State that or includes the both-true case so the learner does not have to guess whether the exercise intends an exclusive choice between the conditions.
03
Record the rule with the attempt
The reusable practice record contains rule identifier, exact connector, card identifier, colour check, parity check, assigned group and reason. Save Rule A and Rule B attempts separately so a later reviewer can tell which answer criteria were used. If a card lacks a colour or number, flag the missing input instead of inventing a result from this complete-data example. The worksheet demonstrates how to apply these particular logical conditions. It does not report learner testing or justify a claim about general reasoning ability from four invented cards.