3rd Grade Art & Science Projects — The Inventor's Workshop — Building and Discovering
Students will build a water filter and learn how different materials clean dirty water, understanding the importance of clean water as a gift from God.
Water is one of God's most important gifts to His creation. Every living thing needs water to survive — people, animals, and plants all depend on clean water every day.
In nature, water is cleaned as it passes through layers of soil, sand, and rock. These layers act like a filter, trapping dirt and other particles while letting clean water pass through. This is part of God's amazing design for the water cycle.
A water filter works by passing dirty water through different materials that trap dirt and impurities. Gravel catches large pieces of debris, sand traps smaller particles, and charcoal absorbs chemicals and odors.
Many people around the world do not have access to clean drinking water. Scientists and engineers work to solve this problem by designing water filtration systems. God calls us to care for others and share the resources He provides.
Build a water filter using a plastic bottle cut in half, cotton balls, sand, gravel, and activated charcoal. Pour muddy water through your filter and observe how it comes out cleaner. Draw a diagram labeling each layer of your filter.