Parallel Lines Project
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Industrial Hygiene and Occupational Health: Historical Foundations, Quantitative
Industrial hygiene has evolved into a data-driven discipline central to occupational risk prevention. This paper examines its historical development, evaluates current practices using global datasets, and projects future trends shaped by technology and emerging hazards. Analysis of data from the International Labour Organization (ILO), World Health Organization (WHO), and U.S. Bureau of Labor Statistics (BLS) reveals persistent occupational disease burdens despite declining injury rates in devel
10th - 12th, Higher Education
Biology, Chemistry, Environment
Robert Page, the Father of Radar
Robert Page was a physicist and a pioneering "Hidden Hero" whose work at the Naval Research Laboratory (NRL) gave the United States a massive technological edge. He is often called the "Father of U.S. Radar" because he solved the critical problem of how to make radar practical for actual combat.+1 The Problem: The "Wall of Silence"In the early 1930s, the concept of using radio waves to detect objects was known, but the technology was "blind." Scientists could send out a radio signal, but they c
4th - 9th
General Science, Informational Text, Reading
CCSS
RI.4.1
, RI.4.2
, RI.4.3
+1
Also included in: The Hidden Heroes Mega Bundle
Design Your own Rocket 1st -2nd Grades Cut and Paste
Part of the set of complete rocket science for kids, This is the design your own rocket Cut and Paste 1-2grades. This is part of an ongoing discussion about space travel and exploration.
Not Specific
Other (Science), Physics, Robotics
NGSS
K-ESS3-3
Also included in: Everything in My Store All 500 WS Activities, Crafts, Posters & More
Why Transformers Need AC
What’s Inside?The Instructor’s Rule: A breakdown of the three essential components needed to create electricity:AC vs. DC Comparison: A clear explanation of how alternating polarity creates magnet, and why DC fails .Safety & Theory: An explanation of Inductive Reactance and why connecting a transformer to DC isn't just a failure—it’s a fire hazard.Visual Summary Table: A quick-reference chart for students to compare AC and DC inputs at a glance.
Not Specific
Engineering, Instructional Technology, Marine Science
Biology Lab Safety Manual + Posters (100+ Pages, Editable, Test Included)
AP Biology Lab Safety Manual + Posters (100+ Pages, Editable, Test Included) Looking for a complete, no-prep lab safety system that actually works in a real classroom? This resource is a FULL lab safety and procedures manual designed for secondary science classrooms (perfect for AP Biology, Biology, and STEM labs). It includes 100+ pages of clear procedures, expectations, and quick-reference posters that make lab management easier, safer, and more consistent. 👉 Best part: This resource is
5th - 12th, Adult Education, Higher Education
Basic Principles, Biology, General Science
Also included in: AP Biology FULL YEAR MEGA BUNDLE – 119+ Resources | Complete Curriculum
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