Both classes (and chess clubs) will benefit from trying checkmate puzzles at this point in their development. The more puzzles they try the better they will get at spotting them. Remember you are trying to find the move that attacks the King so he cannot escape.
Remember the A, B C move for getting out of check.
A - Avoid (King moves)
B - Block - place a piece between the King and the piece attacking the king
C - Capture the piece causing the check.
These moves you find in the puzzles - NONE of the A, B, C moves will work.
Click on the link and have a go.