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This activity investigates how bark beetles can threaten forests by having learners estimate the number of infected trees from a photo.

In this math lesson, learners practice estimation and measurement skills as they move from station to station calculating length, volume, weight, and area.

In this activity (located on page 4 of PDF), learners gain insight into the actual size of dinosaurs and practice making estimations and measurements.

In this activity, learners use two different techniques to estimate how many little things fit into one bigger thing.