This is a rather unique resource for Lent. It's a quiz book written at three levels of difficulty with all sorts of questions and answers about the Catholic Church's celebration of Lent and Easter. It primarily focuses on Church liturgy, with a very significant focus on the process of Christian initiation, culminating with the Sacraments of Initiation at the Easter Vigil. These aren't the kind of questions and answers that you would expect your children to memorize in every particular. It's more of an informal format to discuss topics and potential questions relating to Lent and Easter. Here's a sample page focused on Good Friday:

Level 1: As at Mass, what prayer begins the Communion Rite on Good Friday? (a) The Nicene Creed (b) The Our Father (c) The closing prayer Answer (on back): (b) The Our Father Level 2: How can we have Holy Communion without having had a consecration in a Mass of the bread and wine? Answer (on back): Consecrated hosts from the Holy Thursday celebration are reserved for this Communion service. Level 3: This is the only day of the year that Mass is not celebrated. Why, then, does the Church invite us to receive Holy Communion? Answer (on back): The Church's invitation reminds us of the importance of the Eucharist and of our sharing in the Resurrection of Jesus Christ through our reception of His Body and Blood. This reception of Holy Communion provides a tremendous oppoortunity to express our love and gratitude to Jesus for all that He suffered for us during His passion and death.

This seems especially good as a conversation starter for families to use who are preparing to enter the Church, but could certainly be used for families or CCD classes to simply discuss and familiarize themselves with these Church practices.