Sprinkle with alfalfa seed. Set in dark place. Allow several days for shamrock to grow. Set in sunlight for shamrock to turn green. Have students dig through all the junk and decide what they will need for their leprechaun trap.
Students build their traps.
Permit students to look through the junk as they need more items. Point out and try to encourage the use of force and motion. Ask students to set their traps right before they go home. People who come from Ireland or whose ancestors came from Ireland are called Irish. An emerald is a precious stone which is green.