NDLI: Mystery of the Disappearing Cottonwoods

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Mystery of the Disappearing Cottonwoods

Content Provider	howtosmile
Copyright Year	2006
Description	Learners will explore the scientific mystery behind a disappearing group of trees by examining data and attempting to explain the decline. They make a model of a riverbank and then simulate the spreading of cottonwood seeds by scattering hole-punch confetti onto the model river. Next, learners analyze the percentages of seeds that land in ideal terrain against the percentages of seeds that land on inhospitable conditions. The lesson plan includes handouts, background information, and suggested extension activities.
Related Links	http://www.omsi.edu/sites/all/FTP/files/expeditionnw/7-8.L.1.Cottonwood.pdf
Language	English
Access Restriction	Open
Rights Holder	OMSI
Subject Keyword	Water Trees Habitat Ecosystems Botany Land management Populations Nature and Environment Earth and Space Science Earth Structure Oceans and Water Earth s History Ecology Life Sciences Diversity of Life Plants Human Impact Mathematics Data Analysis and Probability Data Analysis Data Collection The Nature of Science The Scientific Process Conducting Investigations Gathering Data Formulating Explanations Communicating Results The Nature of Technology Technology and Society Technology and the Environment
Content Type	Text
Educational Role	Student Teacher
Educational Use	Assessment
Time Required	PT1H0M0S
Education Level	Class V Class VI Class VII Class VIII Class IX
Pedagogy	Experimental Activity
Resource Type	Hands-on
Subject	Probability Ecology Space Science

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