Estimating Mass in Kilograms Using Benchmarks

This video tutorial teaches third graders how to estimate mass using benchmarks. It explains the concept of mass, the units of grams and kilograms, and how to use common objects as benchmarks for estimation. The video provides examples of objects with masses of 1, 10, and 100 kilograms and includes practical exercises to estimate the mass of a pumpkin and a third grader. The lesson emphasizes that estimates are educated guesses and do not need to be exact.

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