Grade 7 Unit 8: He suffered under Pontius Pilate, was crucified, died and was buried. He descended to the dead.

Students are invited to name the ways in which they give of
themselves and make connections to the suffering and death of
Jesus. They are invited to reflect on the meaning of Jesus’
sacrifice on the cross and on how they can participate in Christ’s
sacrifice at the Eucharist. They are invited to consider Jesus’
descent among the dead as signifying that the message of salvation
is for all people in all times and all places.

From Alberta Ed. Catholic Handbook for Parents Grade 7  

For more details see:  Unit 8 (Grade 7)- Jesus' Crucifixion

For other resources see:
Christ's Atonement for Sin Index