Gears - Torque vs. Speed

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Attachments:

Author:
Erik Brown

School District:
St Lawrence Lewis BOCES (Northwest Tech)

Intended Audience:
Content Area: Technology
Course Title: Electronics
Grade Level: 11-12

Technology Integration:
Technology Hardware: Vex Robotic System
Technology Software: Easy C for VEX
Internet Resources: VEX Curriculum 1.0

Other Content Areas for STEM Integration:
Content Area: Math

STEM PEER REVIEW PROCESS

New York State Learning Standards and Performance Indicators Addressed by this Learning Experience:
Include the full wording of the standard(s) and specific performance indicator(s).

MST Standard 5 - Technology Education
Students will apply technological knowledge and skills to design, construct, use, and evaluate products and systems to satisfy human and environmental needs.
Tools, Resources and Technological Processes
Key idea: Technological tools, materials, and other resources should be selected on the basis of safety, cost, availability, appropriateness, and environmental impact; technological processes change energy, information, and material resources into more useful forms.
Commencement
Students will:

  • test, use, and describe the attributes of a range of material (including synthetic and composite materials), information, and energy resources
  • select appropriate tools, instruments, and equipment and use them correctly to process materials, energy, and information
  • explain tradeoffs made in selecting alternative resources in terms of safety, cost, properties, availability, ease of processing, and disposability
  • describe and model methods (including computer-based methods) to control system processes and monitor system outputs

Problem Statement:
This should be posed as a problem that students will be addressing. This will be the focus of the learning experience.

How long does it take to move a 1 lb box 5 feet using Gear ratio changes to offset Speed,Time and Distance

Essential Question:
This is one focus question that promotes inquiry based learning and allows for multiple solutions and processes.

What Happens to overal speed when the torque of the drive system is changed

Learning Objectives:
By the end of this learning experience students will be able to:

At the end of this lesson students will evaluate the effects that torque has on overall speed and distance traveled during a defined time period.

Necessary Resources:
List all materials that the teacher or students need to complete this learning experience.

Textbook(s), Workbook(s): VEX Inventors Guide

Reference Book(s): VEX Inventors Guide

Handout(s): VEX -Gear Ratios and Torque, VEX - Gear Ratios and Speed

Other:

Steps for Implementing Learning Experience:
List the actions that take place during this learning experience.

  1. Students will construct squarebot with 2 drive motors
  2. Students will calculate the Gear Ratio required to move 1 LB forward.
  3. The Student will calculate the speed achievable givin the torque calculated to move the object.

Instructional Modifications:
List all modifications to the classroom setting as well as those used to enhance learning for all students.

An area will be set up with measured distances in incraments of 6 inches each up to 5 Feet total distance.

Time used for Planning:
Time spent without students to prepare.

2 weeks

Time for Implementation & Assessment:
List each day that the learning experience occurs along with the timeframe of the day in minutes.

Day one - present problem statement to students, remiding students of safty and review of VEX Squarebot building process.
Day 2-4 Students will calculate torque and distance create and test robots to meet the challenge of the task.
Day 5 Students will present the results of their findings to the class

Assessment Tools:
List all forms of assessment for the learning experience.

Quiz - Torque vs. Speed
Worksheet - Speed and Torque Calculations

Reflection:
Share the pros and cons of the learning experience. State any modifications that you would make next time this lesson is implemented.

Student Work:
Attach one sample of student work that demonstrates a mastery, average, or below average level.