A major goal of the Holy Tornado class is to show the relationship between Heavenly and Earthly worship at Mass. 90% of the visual support is drawn on the fly while reading from the Bible or the Missalette. I like to draw and talk at the same time because it's easy to maintain the kids' interest that way.
On the other hand, not everyone likes to draw. Fortunately, most catechetical stuff I like to sketch is also available as fine art; so if I (or you) wanted to skip the board & markers it'd be no problem to run the class with a handout.
As an example, have a look at this panel from Jan van Eyck's Ghent Altarpiece:
As it happens, My Wife the Art Historian treats this work in her textbook. Let's take a quick excerpted tour through the incredible Biblical and Catholic content of the Adoration of the Mystic Lamb (1432):
"As noted earlier, the Lamb of God is Christ, whose blood was shed for the salvation of those who follow him. He is shown here on an altar, pouring out his blood into a chalice, thereby representing the Holy Eucharist offered up at Mass as the perpetual sacrifice of Christ. Two angels in the foreground swing censers high to release the sweet-smelling smoke of incense to carry the prayers of the faithful to heaven. The angels with censers are straight from the Book of Revelation, where they stand before the throne of God as angels sing Holy Holy Holy. The Mass therefore echoes on earth what is happening forever in heaven. The altar is surrounded by a host of angels. Four angels toward the back hold the instruments of the Passion, reminders of the means by which Christ was tortured and offered himself in sacrifice. On the left, one angel holds a large cross, and in his hand we see the crown of thorns. Next to him in an angel holding the nails used to hang Christ on the cross, and in the other hand this angel has the lance used to pierce Christ’s side. Across from them an angel steadies a column to remind us of Christ’s flagellation where he was whipped, and another angel holds the whip, and also a very tall pole with a sponge on top. This last object is a curious inclusion, but we will see it again. It’s the hyssop branch that was used to raise the wine to Christ’s lips during the Crucifixion, as described in the Gospel of John, and after drinking from the sponge, Christ said, ‘it is finished’ and he died.
This last object is not a means of torture like the others, but rather a critical component in understanding the Eucharist, which, after all, is the primary theme of this altarpiece. The institution of the Eucharist in the Bible begins at the Last Supper, which is accepted as the Passover Seder (feast). Passover, in turn, is the Jewish memorial to the original pass over in Egypt during the days of Moses (see Exodus chapter 12). After ten plagues were sent by God to persuade the pharaoh to let the Hebrews go free, God sent one last devastating blow; he killed all the firstborn across the land. The Jews were instructed that to have the hand of death pass over them and spare them, they were to slaughter a perfect lamb, they are use a hyssop branch to spread his blood above their doorpost, and then to prepare and eat the lamb. God was quite specific spelling out the details. In the Upper Room at the Last Supper, Jesus blessed the bread and stated that it was his body, which they must eat, and blessing the cup of wine, he claimed it was his blood which they must drink. Passover Seders according to the haggadah (the “program” for a Seder) of Jesus’ time passed the cup four times among the participants as they recited the Scripture accounts of the passover in Egypt from Exodus 12. The first part of the Seder was a festival blessing over the first cup of wine, which was served with bitter herbs. The second cup was blessed and passed after reciting the Passover narrative from Exodus and singing Psalm 113 (the Little Hallel). The third cup was the “cup of blessing” which followed the main meal of unleavened bread and lamb, which was followed by singing the Great Hallel which included the hymns of Psalms 114 through 118, and finally the fourth cup of wine was shared to end the Seder.
In the Gospels, the account of the Last Supper comes in with the third cup. Jesus blesses the bread, which is part of the main meal, then blesses the wine. Afterward they sing a hymn (the Great Hallel), but there is no mention of them completing the passover with the fourth cup. In fact before the great hymn, Christ says specifically that he will not taste the fruit of the vine again until he comes into his kingdom. It is not until the moment of his imminent death that Christ accepts the wine lifted up to him on a sponge, and at that moment he proclaims that “it is finished.” What is finished is the Passover, and with it the institution of the Eucharist and the New Covenant.
Below the altar of the lamb in the picture we find a rather interesting fountain spouting water from ten jets plus two more from the palms of the angel atop the fountain for a total of twelve, making reference to the twelve tribes of Israel as well as the twelve Apostles. The fountain itself is the fountain of life through baptism, and you may notice there is a small tap at the base of the fountain pool allowing the living water to stream out toward the viewer.
Surrounding this inner scene are several distinct groups of people, all humbled in the presence of the lamb and paying him homage. On the left in the foreground are Old Testament prophets and patriarchs witnessing the lamb’s sacrifice with reverence. Many hold their books in which they prophesied the coming Messiah. Behind them are pagans who lived their lives in pursuit of truth and who many believe anticipated Christianity, among them the great poet, Virgil, who can be singled out in his white robes wearing a laurel wreath on his head.
On the right are the kneeling Apostles dressed in beige robes. Without attributes it is impossible to tell one from another, except John the Evangelist who is clean-shaven. Curiously, if you count them you will come up with thirteen. Saint Paul is included here (see the bald guy in the back) and either his sidekick Barnabus was included, or more likely Matthias, the Apostle chosen replaced Judas Iscariot. Behind them are their successors through Apostolic Succession, the leaders of the Church, dressed in red robes to indicate that all those present here were martyred. First we see three popes; note their papal tiaras of the same style that the Lord wears above in heaven. Then in the second row we see a couple monks with their heads shaved in tonsure, and several bishops with their tall pointy miters. Further back stream a host of others not specifically identified as clergy.
Moving to the background, on the left we see more clergymen, bishops in their miters, and cardinals in their wide-brimmed red hats called galeros. Again we see monks sprinkled in among them. These men are dressed in blue to connote they did not die a martyr’s death. Opposite them on the right are the Virgin Martyrs waving their palm fronds, symbols of their martyrdom. The four in front are all identifiable by their attributes (or at least three of them are). Furthest away is Saint Agnes in the red skirt, who cuddles her lamb, and next to her is Saint Barbara who holds her attribute, a tower. Next is supposedly Saint Catherine of Alexandria according to some scholars, but she should have a wheel which is her attribute, and I for one do not see it there, but it could have been lost in repainting and cleaning over the centuries. Other scholars have suggested that it is Saint Ursula, but I cannot find her attribute of an arrow either, so who knows? Last is Saint Dorothy with her attribute basket of roses. A magnificent distant landscape spans the entire center panel. The city on the right behind the female martyrs in particular is believed by many to be the artist’s vision of the New Jerusalem as it is composed entirely of Churches." (copyright 2012, Reflections on Art, Janet LeBlanc. All rights reserved.)
This image has more content than I have time for in my 6th-grade syllabus; but I know the kids'd have a great time figuring out who and what everything is, with help from me only as required.
On the other hand, a blow-up of the center would be just right for my lesson plan's pacing and focus:
This is the essence of my Heavenly Liturgy sketch. And again, if the goal is to show the fusion of Heaven & Earth at Mass, the above detail would go well with Ariel Agemian's evergreen image of the Liturgy on Earth:
I'd butt them like so on lettersize (but match widths)...
And a great handout for the parents as well.