PBS
Pbs: Human Tree: Ratios
Watch as the National Museum of Mathematics creates an interesting series of images using ratios. This video focuses on the proportional relationship observed in fractals and challenges you to do some critical thinking using ratios and...
EL Education
El Education: Trees for Everybody Meridian Hill Park Tree Field Guide
An online field guide entitled Trees are for Everybody by kindergarten students at the Capital City Public Charter School in Washington, D.C. The book contains student observations, photographs, and original illustrations which provide...
Science Education Resource Center at Carleton College
Serc: Classroom Phenology: The Environment a Source of Data and Observations
A unit where learners record daily temperatures, precipitation amounts, observations of weather patterns, shadow length of a set object, and other observations. In addition, they will complete a season-long weekly observation of a...
EL Education
El Education: A Park Grows in Portland
This field guide was a cross curricular project created by 7th grade students in Portland, Maine. Students engaged in multiple fieldwork visits to the Deering Park (across the street), during which they observed trees, recording with...
ibiblio
Ibiblio: Web Museum: Caspar David Friedrich
Biography of German Romantic painter Caspar Friedrich, including pictures of some of his paintings.