Understanding Density and Design Challenges

The video tutorial at Greenfield Elementary School introduces a lesson on relative density, focusing on whether objects sink or float. Students engage in a 'Build a Barge Challenge' where they design a barge to support 30 pennies. The lesson includes a hands-on experiment with oranges to explore density concepts. Students work in teams to design, test, and refine their barge models, reflecting on their learning and teamwork throughout the process.

What is the main concept being explored in the lesson?

• Magnetism

• Relative density

• Chemical reactions

• Electricity

What is the challenge given to the students?

• Design a bridge

• Build a barge that can support 30 pennies

• Construct a paper airplane

• Create a water filter

What question is posed about the orange?

• Will it dissolve in water?

• Will it roll?

• Will it sink or float?

• Will it change color?

What is the first step in the design process mentioned?

• Sketching

• Testing

• Redesigning

• Planning

What material did the students use to help seal their barge?

• Wood

• Metal

• Modeling clay

• Plastic

What was a key factor in the students' success in the challenge?

• Using expensive materials

• Teamwork

• Individual work

• Following a strict plan

What did the student learn about a peeled orange?

• It changes color

• It sinks

• It dissolves

• It floats

What was the student's initial assumption about the peeled orange?

• It would change color

• It would dissolve

• It would sink

• It would float

What did the student feel about their group's performance?

• Indifferent

• Proud

• Confused

• Disappointed

What was the outcome of the barge challenge for the student's group?

• They did not participate

• They successfully floated the barge with 30 pennies

• They used a different material

• They failed to float the barge