Tamra B. Orr

Tamra Orr is a full-time writer and author living in the gorgeous Pacific Northwest. She loves her job because she learns more about the world every single day and then turns that information into pop quizzes for her patient and tolerant children (ages 16, 13, and 10). She has written more than 80 nonfiction books for people of all ages, so she never runs out of material and is sure she’d be a champion on Jeopardy!


Title   ATOS Format Qty
Electing Leaders 7.2
Crime Scene Investigator 6.4
Forensic Science Investigator 6.4
Public Health Microbiologist 5.8
Geothermal Energy 6.2
Hydroelectric Energy 6.4
Government at Work 6.5
Interpreter 5.8
Environmentalist 6.1
Organic Farmer 5.6
Counting Our People 5.8
It's Cool to Learn About Countries: Indonesia 5.0
It's Cool to Learn About Countries: Bangladesh 5.5
Junior Scientists: Experiment with Weather
Working at the Zoo
How Did They Build That? Zoo
How Did They Build That? Lighthouse 3.2
It's Cool to Learn About the United States: Midwest 6.2
It's Cool to Learn About the United States: Southwest 6.4
Tracking an Epidemic
Investigating a Crime Scene
Forecasting a Flood
Pondering Pollution
Battling Extinction
Unearthing Fossils
Searching the Sky
Understanding Insects
Poison Dart Frog 4.4
Red-eyed Tree Frog 4.7
Reticulated Python 5.3
I See Falling Stars 3.4
It Snows 3.3
Crime Scene Investigator 6.4
Forensic Science Investigator 6.9
The Science of a Fastball 5.8
The Science of a Flip Turn 5.6
Praying Mantis 3.2
Walking Stick 3.6
The Wind Blows 3.9
We Have Hurricanes 3.9
Studying Sinkholes 5.2
Growing Nutritious Food 5.1
Understanding Sound 4.9
September 11 and Terrorism in America Fall 2017
Hurricane Katrina and America's Response Fall 2017
Obama vs. McCain and the Historic Election Fall 2017
Columbia Space Shuttle Explosion and Space Exploration Fall 2017
Polar Vortex and Climate Change Fall 2017 5.2
Invention of Facebook and Internet Privacy Fall 2017
BP Oil Spill and Energy Policy Fall 2017
Tucson Shooting and Gun Control Fall 2017
  • Soon! Fall 2018
  • New! Spring 2018
  • Recent Fall 2017

Education for the 21st Century

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