God Reveals His Might at the Jordan River

A great activity connected with this lesson is to "build" something to remember God's provisions in your life.  
Just as the Israelites used the stones as a memorial, you as a family should take time to "build" memories.
Joshua 4:21-23  

And he said to the people of Israel, “When your children ask their fathers in times to come, ‘What do these stones mean?’then you shall let your children know, ‘Israel passed over this Jordan on dry ground.’ For the Lord your God dried up the waters of the Jordan for you until you passed over, as the Lord your God did to the Red Sea, which he dried up for us until we passed over, so that all the peoples of the earth may know that the hand of the Lord is mighty, that you may fear the Lord your God forever.

What have you established in your family that will prompt your children to "What are those?" and provide you with the opportunity to talk to them about God's goodness.