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In this outdoor biology and math activity, learners estimate the size of a population of organisms too numerous to count.

Learners use beach profile data from a local beach or online data from Ocean City, Maryland to investigate coastal erosion and sediment transport.

In this outdoor activity and fun race, learners first find the most common type of tree in a forest site.

Learners draw and describe a leaf, and then re-find leaves drawn and described by other learners. Learners can observe leaves outside, or leaves may be brought into the classroom.

Learners explore the relationship between energy consumption, population, and carbon emissions in the countries of the Americas.

Why is ocean water sometimes the warmest when the average daily air temperature starts to drop? In this activity, learners explore the differing heat capacities of water and air using real data.