Rube Goldberg Machines: Newton's 2nd Law in Action

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Rube Goldberg Machines: Newton's 2nd Law in Action

Grade 7Physics14 days

Seventh graders will engage in a hands-on project to design and construct a Rube Goldberg machine that illustrates Newton's Second Law of Motion. Through experiments, blueprint planning, and construction, students will explore forces such as gravity and friction, calculate net force, and optimize machine design for effective demonstration of motion principles. The learning experience culminates in the construction and testing phase, where students apply scientific reasoning and problem-solving skills to showcase their understanding of physical laws.

Rube GoldbergNewton's Second LawForcesFrictionNet ForceGravityOptimization

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Inquiry Framework

Question Framework

Driving Question

The overarching question that guides the entire project.How can you design a Rube Goldberg machine to demonstrate Newton's Second Law of Motion while understanding the role and impact of various forces such as friction and net force in its operation?

Essential Questions

Supporting questions that break down major concepts.

What is a Rube Goldberg machine and how can it be used to demonstrate Newton's Second Law of Motion?
How does understanding forces and motion help in the design and functioning of a Rube Goldberg machine?
What are some examples of forces that can be used in a Rube Goldberg machine, and how do they relate to Newton's Second Law?
How can we calculate the net force acting on an object within a Rube Goldberg machine setup?
What role does friction play in the movement of objects in a Rube Goldberg machine?
How can we optimize a Rube Goldberg machine to demonstrate the principles of Newton's Second Law effectively?

Standards & Learning Goals

Learning Goals

By the end of this project, students will be able to:

Understand and apply Newton's Second Law in designing and explaining the function of a Rube Goldberg machine.
Identify and explain the role of different forces, such as friction and gravity, which contribute to the operation of the machine.
Calculate the net force acting on an object within a Rube Goldberg setup and predict its motion.
Optimize a Rube Goldberg machine's design to effectively demonstrate the principles of Newton's Second Law and the forces involved.
Develop skills in scientific reasoning and problem-solving through the hands-on construction and testing of a complex machine.

NGSS

MS-PS2-1

Primary

Apply Newton's Third Law to design a solution to a problem involving the motion of two colliding objects.Reason: The project involves designing a Rube Goldberg machine which inherently requires understanding and applying Newton's laws, including the Second Law, in the context of forces and motion.

MS-PS2-2

Primary

Plan an investigation to provide evidence that the change in an object's motion depends on the sum of the forces on the object and the mass of the object.Reason: This standard directly aligns with the project's goal of demonstrating Newton's Second Law, which involves calculating net force and understanding the effects of different forces.

MS-PS2-4

Supporting

Construct and present arguments using evidence to support the claim that gravitational interactions are attractive and depend on the masses of interacting objects.Reason: Understanding gravitational force is crucial to designing the Rube Goldberg machine, as it influences the movement and interaction of components within the machine.

Entry Events

Events that will be used to introduce the project to students

The Domino Chain Reaction Challenge

Start the entry event with a thrilling domino chain reaction setup. As students watch the dominos fall in sequence, introduce the concept of Rube Goldberg machines and challenge them to create their own, using Newton’s 2nd law to incorporate motion and force.

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Portfolio Activities

These activities progressively build towards your learning goals, with each submission contributing to the student's final portfolio.

Activity 1

Forces and Motion Exploration

Introduce students to the concepts of force and motion through hands-on experimentation. This activity will lay the foundation for understanding the principles of Newton's Second Law and its application in real-world scenarios.

Steps

Here is some basic scaffolding to help students complete the activity.

1. Watch an introductory video on Newton's Second Law and its applications in everyday life.

2. Conduct a series of simple experiments using everyday objects (e.g., balls, toy cars) to observe and record the effects of force on motion.

3. Discuss findings with peers and relate observations to Newton's Second Law, focusing on the relationship between force, mass, and acceleration.

Final Product

What students will submit as the final product of the activityA set of experiment notes and observations that demonstrate understanding of Newton's Second Law.

Alignment

How this activity aligns with the learning objectives & standardsAligns with MS-PS2-1 by helping students understand and apply Newton's Second Law through experimental observation.

Activity 2

Rube Goldberg Machine Blueprint Planning

Guide students in the planning phase of their Rube Goldberg machine project, emphasizing the identification and integration of various forces that manifest Newton’s Second Law.

Steps

Here is some basic scaffolding to help students complete the activity.

1. Research examples of Rube Goldberg machines and analyze the forces at play in these examples.

2. Sketch a preliminary blueprint of a Rube Goldberg machine that incorporates at least five steps involving different forces, such as gravity and friction.

3. Label forces at work in each step of the blueprint and relate them to corresponding motions according to Newton's Second Law.

Final Product

What students will submit as the final product of the activityA detailed blueprint of a Rube Goldberg machine with labeled forces and corresponding motions for each step.

Alignment

How this activity aligns with the learning objectives & standardsSupports MS-PS2-2 by having students plan an investigation that shows how the change in motion is influenced by the sum of forces.

Activity 3

Net Force Calculation Workshop

Develop students' skills in calculating net force by using mathematical tools and real-world scenarios. This workshop will prepare them to analyze forces within their Rube Goldberg machines.

Steps

Here is some basic scaffolding to help students complete the activity.

1. Review concepts of net force and how it affects an object's motion through guided notes and practice problems.

2. Use a series of word problems and experiments with various objects to calculate the net force acting on them.

3. Apply these calculations to predict the movement of each component within their planned Rube Goldberg machine.

Final Product

What students will submit as the final product of the activityA collection of solved problems and force calculations demonstrating mastery of net force analysis.

Alignment

How this activity aligns with the learning objectives & standardsAligns with MS-PS2-2 by reinforcing the ability to calculate predicted changes in motion based on net force.

Activity 4

Friction and Gravity Investigation

Engage students in a deep dive into friction and gravity by testing how these forces interact within their Rube Goldberg machine models.

Steps

Here is some basic scaffolding to help students complete the activity.

1. Conduct experiments to measure the effects of friction and gravity on different surfaces and objects.

2. Incorporate findings into Rube Goldberg machine designs by adjusting components to optimize performance.

3. Present and evaluate findings with classmates, discussing the impact of adjustments on the machine's efficiency as per Newton's Second Law.

Final Product

What students will submit as the final product of the activityAdjusted Rube Goldberg machine plans optimized for friction and gravity considerations.

Alignment

How this activity aligns with the learning objectives & standardsSupports MS-PS2-4 by focusing on gravitational interactions and how they depend on object masses.

Activity 5

Rube Goldberg Machine Construction and Testing

Facilitate the actual construction of the Rube Goldberg machines, with an emphasis on applying learned concepts of forces and motion to demonstrate Newton's Second Law.

Steps

Here is some basic scaffolding to help students complete the activity.

1. Gather materials and begin constructing the Rube Goldberg machine according to the planned blueprint.

2. Test the machine step by step, identifying any areas where forces are not producing the intended results.

3. Iterate on the design, modifying components and recalculating forces to achieve a successful operation.

Final Product

What students will submit as the final product of the activityA fully constructed Rube Goldberg machine that effectively demonstrates Newton's Second Law in action.

Alignment

How this activity aligns with the learning objectives & standardsCovers MS-PS2-1 and MS-PS2-2 by implementing solutions to demonstrate the effects of Newton's Second Law through practical application.

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Rubric & Reflection

Portfolio Rubric

Grading criteria for assessing the overall project portfolio

Rube Goldberg Machine Project Rubric

Category 1

Understanding of Newton's Second Law

Evaluates students' grasp of Newton's Second Law and ability to articulate its principles through experiments and explanations.

Criterion 1

Theory Explanation

Measures the student's understanding of Newton's Second Law through explanation and application in experiments.

Exemplary

4 Points

Articulates a sophisticated explanation of Newton's Second Law with multiple examples from experiments, showing deep understanding and application.

Proficient

3 Points

Substantially explains Newton's Second Law with relevant examples from experiments, showing clear understanding and application.

Developing

2 Points

Provides a basic explanation of Newton's Second Law with some examples, showing emerging understanding and application.

Beginning

1 Points

Shows minimal explanation of Newton's Second Law and struggles with real-world application.

Criterion 2

Experimental Notes

Evaluates the relevance and detail of experiment notes to demonstrate principles of Newton's Second Law.

Exemplary

4 Points

Notes are thorough, clearly demonstrating principles of Newton’s Second Law with precise observations.

Proficient

3 Points

Notes are detailed, clearly demonstrating principles of Newton’s Second Law with relevant observations.

Developing

2 Points

Notes show some detail and relevance but lack depth in demonstrating Newton's Second Law.

Beginning

1 Points

Incomplete or irrelevant notes that do not clearly demonstrate understanding of Newton’s Second Law.

Category 2

Rube Goldberg Machine Design and Construction

Assesses the creativity, accuracy, and functionality of the Rube Goldberg machine design and execution.

Criterion 1

Design Creativity and Complexity

Evaluates the creativity and complexity of the Rube Goldberg machine design, including the variety of forces used.

Exemplary

4 Points

Design demonstrates an exceptional level of creativity and complexity, incorporating a wide variety of forces effectively.

Proficient

3 Points

Design shows substantial creativity and complexity with well-incorporated forces.

Developing

2 Points

Design reflects some creativity and complexity but lacks thorough force integration.

Beginning

1 Points

Design lacks creativity and complexity, with minimal force integration.

Criterion 2

Accuracy of Force Application

Measures the precision and correctness in the application of forces within the machine design.

Exemplary

4 Points

Accurate application of forces is demonstrated with high precision throughout the machine's steps, aligned with Newton’s Second Law.

Proficient

3 Points

Forces are applied accurately in most steps of the machine, showing understanding of Newton’s Second Law.

Developing

2 Points

Forces are applied with some accuracy but inconsistently affect the machine's operation.

Beginning

1 Points

Forces are inaccurately applied, hindering the machine's function and demonstration of principles.

Criterion 3

Functionality and Optimization

Assess how well the constructed machine functions and the extent of iterative improvements based on testing.

Exemplary

4 Points

Machine functions seamlessly with exceptional execution and iterative optimizations that significantly enhance performance.

Proficient

3 Points

Machine functions effectively with clear improvements based on testing observations.

Developing

2 Points

Machine functions with some issues; optimization efforts show limited improvements.

Beginning

1 Points

Machine is incomplete or ineffective, with minimal evidence of optimization.

Category 3

Scientific Reasoning and Problem Solving

Evaluates the application of scientific reasoning and problem-solving skills throughout the project.

Criterion 1

Data Interpretation and Analysis

Measures the ability to analyze data and interpret results from experiments and machine tests.

Exemplary

4 Points

Demonstrates exceptional ability to analyze data and interpret results, with insightful conclusions drawn from evidence.

Proficient

3 Points

Effectively analyzes data and interprets results, supporting conclusions with evidence.

Developing

2 Points

Analyzes data with limited interpretation, showing emerging ability to draw conclusions.

Beginning

1 Points

Shows minimal analysis and interpretation of data, struggling to draw valid conclusions.

Criterion 2

Collaboration and Communication

Assesses the student's ability to work collaboratively and communicate ideas effectively.

Exemplary

4 Points

Demonstrates leadership in collaboration, with exceptional communication and contribution to group work.

Proficient

3 Points

Contributes effectively in collaborative situations, with clear communication of ideas.

Developing

2 Points

Participates in collaboration with basic communication skills and variable contribution.

Beginning

1 Points

Minimal participation and communication in collaborative activities.

Reflection Prompts

End-of-project reflection questions to get students to think about their learning

Question 1

Reflect on the overall process of designing and building a Rube Goldberg machine. What did you learn about the application of Newton's Second Law in this process?

Text

Required

Question 2

How confident do you feel in your understanding of the role of friction and gravity in the functionality of your Rube Goldberg machine?

Scale

Required

Question 3

Which forces did you find most challenging to work with in your Rube Goldberg machine project, and how did you overcome these challenges?

Text

Optional

Question 4

On a scale from 1 to 5, how effectively do you think your Rube Goldberg machine demonstrates Newton's Second Law?

Scale

Required

Question 5

Which part of the project (planning, building, testing) did you find most engaging, and why?

Multiple choice

Optional

Options

Planning

Building

Testing