Chicago Botanic Garden
What Can Tree Rings Tell Us About Climate?
Tree rings are slightly thicker on the south side of the tree because it receives more sunlight. Part two in a series of five lessons helps learners analyze tree rings to determine the environmental conditions that caused size...
Curated OER
Prime & Composite Numbers: Algebra/Geometry Institute 2009
Students create factor trees. In this prime and composite lesson, students model fractions using tiles. They create factor trees and identify prime and composite numbers. Students use grid paper and tiles to model numbers. A...
EngageNY
Modeling Using Similarity
How do you find the lengths of items that cannot be directly measured? The 13th installment in a series of 16 has pupils use the similarity content learned in an earlier resource to solve real-world problems. Class members determine...
Nuffield Foundation
Measuring Rate of Water Uptake by a Plant Shoot Using a Potometer
How quickly does a plant transpire? Learners explore this question through measuring water uptake with a potometer. They time the movement of a bubble a set distance to understand the motion and rate of speed.
National Park Service
Aspect, Treeline, and Climate
Head to the treeline and beyond to examine how this feature of the landscape affects weather and climate, which gives scientists clues about its health. Class members' observations of photographs provide the data that drives the...
Curated OER
Make Sense of Nature
Learners participate in this program that heightens their awareness and curiosity of nature as well as their sense of adventure and exploring new surroundings. They identify and choose an object from nature after exploring it with other...