teaching stem using lego underwater robots · teaching stem using lego® underwater robots....
TRANSCRIPT
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Teaching STEM usingLEGO® Underwater Robots
Mercedes McKay
The Center for Innovation in Engineering and Science EducationStevens Institute of Technology
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About Stevens / CIESE
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WaterBotics in ActionOn the surface and underwater
https://www.youtube.com/watch?v=PC4brbxNugc
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What is WaterBotics?• Underwater ROVs (Remotely
Operated Vehicles) created with LEGO materials
• Approximately 20-26 hour curriculum aimed at middle and high school classes as well as summer camps and after-school programs
• Developed, piloted, and implemented with thousands of students in U.S. through National Science Foundation funding
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Why Underwater Robotics?• Presents unique, complex design
challenges not found in land-based projects (e.g. buoyancy, control in 3-D)
• Exposure to science concepts like propulsion, drag, buoyancy and stability, gearing, torque, speed, and thrust
• Awareness of careers that involve STEM skills
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Why LEGOs?
• Familiarity with LEGOs
• Ease of use and durability
• Variety of pieces
• Rapid prototyping, testing, and
redesign
• Can leverage prior purchases of
LEGO equipment
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NXT & EV3 (coming soon!)
What do you use?
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Project Challenge
Create an ROV that will be able to:
• Dive under the water
• Move around in 3 dimensions in a fully controlled manner
• Pick up weighted whiffle balls and deposit themin sunken bins
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Mission 1: Rescue!• Build a robot that can travel forward and
backward on the surface of the water
• Optimize gearing to improve speed and/or control
• Use the robot to save a “drowning swimmer”
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Mission 1Example Achievements
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Mission 2: Clean Up!
• Add steering and two-dimensional movement
• Maneuver the robot on the surface of the water to clean up an oil spill
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Mission 3: Mine Sweep!
• Engineer a buoyant and stable robot that can dive under the water
• Detonate or disable underwater “mines” to make a shipping lane safe
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Mission 4: Collect!
• Produce an ROV that can retrievesamples from a sunken ship
• Optionally, create a mechanism to grab and release the objects
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Program a Custom Remote
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Key Concepts and Skills
Buoyancy Stability
Newton’s Laws Propulsion
Gear Ratios Inertia
Forces Torque
Volume Density
Programming Troubleshooting
Iterative Design Team Building
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Next Generation Science Stds
SCIENCE• PS2.A: Forces and Motion• PS2.C: Stability and Instability in
Physical Systems
ENGINEERING• ETS1.A: Defining and Delimiting
Engineering Problems• ETS1.B: Developing Possible Solutions• ETS1.C: Optimizing the Design Solution
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ISTE Standards
STUDENTS1. Creativity and Innovationthrough iterative engineering design process
4. Critical Thinking, Problem Solving, and Decision Making through mission-based, real-world application of underwater robotics
TEACHERS1. Facilitate and Inspire Student Learning and Creativitythrough authentic problem-solving, collaboration and recognition of achievements
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Implementation Approaches
In School
• Within a graded course• Standards to be met• School restrictions (pool)• In a required course
o Higher learning curveo Better girl / boy ratioo More inexperienced students
• In an elective courseo More flexible wrt standardso Higher initial enthusiasmo More boys, more experienced students
Out of School
• Summer camp or after-school• More flexibility• Can use full project time• More focus on enthusiasm and
experience rather than grades• Can be tailored for specific
audiences, such as an all-girl camp or an outreach program
• Can be intense; need breaks and icebreakers
In school or out of school?
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Implementation Considerations• Pool setup • Room configuration and access to computers• Educator prior experience with robotics and
technology• Equipment needs per group• Costs of materials
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Why Implement WaterBotics?• Excellent at teaching engineering and inspiring STEM
interest• Real World Contexts• Scaffolded Learning• Mission Achievements• Promotes iterative design by using LEGOs • Driven by Collaboration• Flexible Implementation• Detailed Curriculum Guide• Few Consumables • 53% of Participants have been Female
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https://www.youtube.com/watch?v=8UxhmwkFk40&feature=youtu.be
WaterBotics Overview