How do I know when my child is ready to receive the Eucharist?
First, listen to your child. It is important that your child not receive the Eucharist until s/he has expressed a desire to do so. In their own words children should be able to tell us why they want to receive Communion. This ability to express their desire and to give the reasons behind that desire proves that they “have reached the use of reason” as required by Church Law (Cannon 914).
Second, ask some gentle questions of your child. Church law (Cannon 913) also states: “It is required that they have sufficient knowledge and careful preparation so as to understand the mystery of Christ according to their capacity, and can receive the Body of the Lord with faith and devotion.” In practical terms this means that children are expected to know something about God the Father, Jesus the Son of God, and the Holy Spirit who guides us in following what Jesus and the Church teach us. They must know, and be able to tell you, “Who” they are receiving in Communion.
Finally, watch your child. The “careful preparation” required by Cannon 913 (quoted above) is more than intellectual preparation. It includes formative experiences in faith such as regular prayer, participation in Sunday Mass each week, and service to others through acts of charity and works of mercy. As you see your child regularly and willingly increase her involvement in these activities, you will know she is ready to celebrate her First Communion.
Which prayers should my child be able to say by heart?
Before receiving the Eucharist for the first time your child should be able to join the assembly in all the responses during the Mass. These responses are easily learned through regular participation in the Mass. A missal might prove to be a useful tool for your child as she learns these responses.