Begin to say the memory verse out loud. When you come to a place where they used a picture symbol, ask them to show you an action that will remind everyone what word is missing. Review the memory verse several times using this method until the children can repeat it. Holy things are things set aside for special use. Things that refer to God, Jesus or the Holy Spirit.
Common things are things that are ordinary.
They do not have any special value and are not treated in any particular way. When God wanted Moses to understand that he was to treat Holiness with respect, He asked him to remove his shoes. Explain to the children that you are going to show them a few items. If they think the item is holy or is about holiness they are to remove one of their shoes. If they think the item is common or ordinary, they put the shoe back on.