Salt Out of Seawater

Scripture: Matthew 5:13-18

Learning Objectives:

  • Students will learn the importance of salt and light in our world.
  • Students will learn why God wants His people to be salt and light.
  • Students will learn ways they can be salt and light in their worlds.
  • Students will learn how to harvest salt from seawater.

Guiding Question: How can we serve as light for God?

Materials: Stove, large pot, saltwater, strainer, flat surface for salt to dry out on

Procedure: Review the Salt and Light story. Remind students that God wants us to be salt and light to others to help them know God and grow in Him. Ask students how they think they could be salt and light in school, after school activities, running errands, etc. Allow students to share and also give examples of when they have been salt and light to others before. Explain that God often places people/opportunities in our life to be salt and light to and we need to be aware and open to what God brings in our life. Explain that our words and our actions reflect God to others and we should have a Godly attitude with those we interact with.

Introduce the activity. Tell the students they are going to learn how to gather salt from seawater. Seawater is filled with salt but there is a way to remove the salt from the water. Have them learn how to and harvest salt from seawater. Gather salt water from home and let it sit for about an hour. Then pour the water through a strainer. Once strained, pour the water into a large pot and boil (no lid). Once boiling, turn the heat to simmer and stir occasionally. When there is about one inch of water left, continually stir with water on low heat until all the water evaporates. Then place the salt in the pot on a flat surface to dry out. 


Additional Questions: How does salt keep food fresh?

Supplemental Activity: Have students research what types of food need salt for basic preservation.

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