Middle School (6-8)
Understands that a variable can be used as a placeholder for a specific unknown (e.g., x + 8 = 13), and as a representative of a range of values (e.g., 4t + 7).
Examples Referencing Requested Benchmark
Just What is a Logarithm, Anyway?
Why Is There a Tidal Bulge Opposite the Moon?
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