Even though pennies seem to be relatively thin, stack enough of them into a single stack, and you could have quite a high stack. Enough so, that the final result can be a surprise to you as well as your class. This activity centers around using fractions, very large numbers, and unit conversions to describe length. Extensions to include scientific notation are also explored. 

Common Core

6.RP.A.3.a 6.NS.B.3 6.EE.B.6 8.EE.A.3 8.F.A.1 MP6