Engage: Begin with a whole group discussion to help students activate background knowledge on plant growth and photosynthesis. Working in small groups, students will use an electronic device to research hydroponics. Each group will do a brief 1-minute verbal presentation to share their findings with the class.
Explore: Working in small groups of 3-5, students will follow the procedure in Growing Plants without Soil. Students will collect data on the Plants without Soil Journal Sheet.
Explain: Working in pairs, students will create a cartoon to defend the position that plants get materials needed for growth primarily from the air and water.
Elaborate: Have student groups present the cartoon and their findings to the whole class. The groups will defend the position that plants obtain materials needed for growth primarily from air and water.