STEM: 3-D Printing: Adding and Subtracting Fractions (Mathematics Readers)

Learn STEM topics and fractions while engaged in reading about the advancements being made with 3-D printing! This grade 4 math reader describes how 3-D printing technology is being used and developed by doctors to help patients. It uses real-world examples to teach math skills like adding and subtracting fractions. The challenging practice problems, graphs, and sidebars provide many opportunities for students to practice their developing math skills, and apply what they’ve learned to their daily lives. Text features include captions, a glossary, an index, and a table of contents to increase students’ vocabulary and literacy skills and their interaction with the text. Math Talk poses problems for further thinking, requiring students to use their higher-order thinking skills.

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Navy Additive Manufacturing (AM): Adding Parts, Subtracting Steps – 3D Printing, Tooling, Aerospace, Binder Jetting, Directed Energy Deposition, Material Extrusion, Powder Fusion, Photopolymerization

This report examines additive manufacturing (AM) and describes its potential impact on the Navy’s Supply Chain Management processes. Included in the analysis is the implementation of 3D printing technology and how it could impact the Navy’s future procurement processes, specifically based on a conducted analysis of the automotive aerospace industry. Industry research and development has identified multiple dimensions of AM technology, including material variety, cost saving advantages, and lead-time minimizations for manufacturing products. This project is designed to provide the Navy with a recommendation based on an in-depth industry case-study analysis. CHAPTER I * INTRODUCTION * A. OVERVIEW * B. REPORT ORGANIZATION * CHAPTER II * LITERATURE REVIEW * A. ADDITIVE MANUFACTURING HISTORY * B. ADDITIVE MANUFACTURING OVERVIEW * C. ADDITIVE MANUFACTURING PROCESSES AND METHODS * 1. Binder Jetting * 2. Directed Energy Deposition * 3. Material Extrusion * 4. Material Jetting * 5. Powder Bed Fusion * 6. Sheet Lamination * 7. Vat Photopolymerization * D. ADDITIVE MANUFACTURING USES AND BENEFITS * E. ADDITIVE MANUFACTURING CHALLENGES, ISSUES, AND CONCERNS * F. NAVY PROCUREMENT PROCESS * G. SUMMARY * CHAPTER III * METHODOLOGY * A. MULTIPLE CASE-STUDY ANALYSIS * B. IMPLEMENTATION * C. SUMMARY * CHAPTER IV * CASE ANALYSIS * A. BIG INDUSTRY: ADDITIVE MANUFACTURING IN AVIATION AND AUTOMOTIVE MANUFACTURING * 1. Automotive Industry * a. General Motors Financial Troubles * b. Costs * c. Additive Manufacturing in Tooling Process * d. Application in Production of Parts * 2. Aerospace Industry * 3. Boeing Aviation Corporation * 4. Additive Manufacturing Developments * B. CONCLUSIONS * CHAPTER V * IMPLEMENTATION * A. INDUSTRY APPLICATIONS * B. MILITARY APPLICATIONS * C. IMPLEMENTATION PROCESS AND CRITERIA * D. MILITARY ISSUES WITH AM * 1. Parts Testing and Certification * 2. Information Security * 3. Intellectual Property Infringement * 4. Personnel Training and Skill Set Development * E. ADDITIVE MANUFACTURING PROCESSES DEPLOYED * CHAPTER VI * CONCLUSION * A. SUMMARY

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