NGSS.3-5-ETS1, NGSS.MS-ETS1
Pencils, tape, pipe cleaners, scissors
Roots anchor the plant and are responsible for the uptake of water. They promote soil health by preventing erosion and creating beneficial microbial communities. Shallow roots can access bands of fertilizer like Nitrogen and Phosphorus. Deep roots can forage for water during times of drought, and channels made through the soil by roots allow water to infiltrate deep down. Vertical roots, like taproots, can punch through hardpans that limit growth.
Share the background information with the students, then share the puzzle to be solved. Determine constraints (e.g., time alotted, space, materials provided, etc.) and divide students into small groups.
Ask a series of questions to help students brainstorm solutions to the puzzle. Encourage students to list all ideas – don’t hold back! Before moving on, make sure each group selects a solution that fits within the contraints.
Students diagram the prototype, identify the materials needed to build the prototype, and write out the steps to take. Students describe the expected outcomes.
Students follow their design plan and build their prototypes. Monitor their progress and remind them about how much time they have.
Students evaluate their creation and compare it with the expected outcomes. Students seek areas of improvement and make changes where needed.
Students share their solution to the puzzle and communicate lessons learned.
Experiment trying to “root” heavier items. Have a competiton to see who can support the heaviest item!