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Mr. Lehrke
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Geologic Time
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Water in the Atmosphere
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Lehrke's Links
La Crescent-Hokah School District
About Mr. Lehrke
Mr. Lehrke
Home
Language Arts
ACTION magazine
Novel Studies
Poetry
Writing
Grammar
Earth Science
Science Inquiry & the Scientific Method
Science & Engineering
The Brain
Growth Mindset
Earth and the Moon
The Solar System
Earth's Layers & Plate Tectonics
Earthquakes & Volcanoes
Minerals
Rocks
Geologic Time
The Atmosphere
Water in the Atmosphere
Weather
The Universe
Class Expectations
Lehrke's Links
La Crescent-Hokah School District
About Mr. Lehrke
More
Home
Language Arts
ACTION magazine
Novel Studies
Poetry
Writing
Grammar
Earth Science
Science Inquiry & the Scientific Method
Science & Engineering
The Brain
Growth Mindset
Earth and the Moon
The Solar System
Earth's Layers & Plate Tectonics
Earthquakes & Volcanoes
Minerals
Rocks
Geologic Time
The Atmosphere
Water in the Atmosphere
Weather
The Universe
Class Expectations
Lehrke's Links
La Crescent-Hokah School District
About Mr. Lehrke
Earth's Layers & Plate Tectonics
Waves & the Earth: P & S Waves - Astrophysics
LINK
Earthquake Waves
LINK
Plate Tectonics
LINK
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